{"id":1475,"date":"2020-05-02T17:16:14","date_gmt":"2020-05-02T17:16:14","guid":{"rendered":"http:\/\/lazaris.net\/lazaris\/chris\/?p=1475"},"modified":"2021-10-03T17:02:21","modified_gmt":"2021-10-03T17:02:21","slug":"r0-and-herd-immunity","status":"publish","type":"post","link":"https:\/\/lazaris.net\/lazaris\/chris\/r0-and-herd-immunity\/","title":{"rendered":"Ro \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b1\u03b3\u03ad\u03bb\u03b7\u03c2"},"content":{"rendered":"\n<p> \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd <a rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\" href=\"https:\/\/plus.maths.org\/content\/people\/index.html#marianne\" target=\"_blank\">Marianne Freiberger<\/a>,  (<a rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\" href=\"https:\/\/plus.maths.org\/\" target=\"_blank\">https:\/\/plus.maths.org\/)<\/a> \u03bc\u03b5\u03c4\u03ac\u03c6\u03c1\u03b1\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03bb\u03af\u03b3\u03b1 \u03c3\u03c7\u03cc\u03bb\u03b9\u03b1 \u03b4\u03b9\u03ba\u03b9\u03ac \u03bc\u03bf\u03c5.<\/p>\n\n\n\n<p style=\"text-align: justify;\">\u0394\u03cd\u03bf \u03c0\u03c1\u03ac\u03b3\u03bc\u03b1\u03c4\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03bf\u03bb\u03bb\u03bf\u03af \u03b1\u03c0\u03cc \u03b5\u03bc\u03ac\u03c2 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03ba\u03bf\u03cd\u03c3\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03b5\u03c2 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2. \u03a4\u03b7\u03bd \u03ad\u03bd\u03bd\u03bf\u03b9\u03b1 \u03c4\u03b7\u03c2 \u00ab\u03b1\u03c3\u03c5\u03bb\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03b1\u03b3\u03ad\u03bb\u03b7\u03c2\u00bb \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c0\u03bf\u03c5 \u03bf\u03bd\u03bf\u03bc\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 <strong>Ro<\/strong>&nbsp;(\u03a1\u03bf \u03bc\u03b7\u03b4\u03ad\u03bd)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u039f \u03b2\u03b1\u03c3\u03b9\u03ba\u03cc\u03c2 \u03c1\u03c5\u03b8\u03bc\u03cc\u03c2 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2<\/h3>\n\n\n\n<p class=\"has-text-align-justify\">\u039b\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c5\u03c0\u03cc\u03c8\u03b7 \u03bc\u03b9\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ae \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf COVID-19, (\u03ba\u03bf\u03c1\u03c9\u03bd\u03bf\u03b9\u03cc\u03c2) \u03c4\u03bf &nbsp;Ro&nbsp;\u03b5\u03af\u03bd\u03b1\u03b9 \u03bf \u03c1\u03c5\u03b8\u03bc\u03cc\u03c2 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03bd\u03cc\u03c3\u03bf\u03c5, \u03b4\u03b7\u03bb\u03b1\u03b4\u03ae \u03bf \u03bc\u03ad\u03c3\u03bf\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c4\u03c9\u03bd \u03b1\u03c4\u03cc\u03bc\u03c9\u03bd \u03c0\u03bf\u03c5 \u03c0\u03c1\u03bf\u03c3\u03b2\u03ac\u03bb\u03bb\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf, \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03bf\u03c5 \u03cc\u03c4\u03b9 <strong>\u039f\u039b\u039f\u0399<\/strong> \u03c3\u03c4\u03bf\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 (\u03c0\u03bf\u03bb\u03cd \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03b1\u03c5\u03c4\u03cc). \u0393\u03b9\u03b1 \u03c4\u03bf COVID-19 \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7 \u03c3\u03c4\u03b9\u03b3\u03bc\u03ae \u03b5\u03ba\u03c4\u03b9\u03bc\u03ac\u03c4\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03ba\u03c5\u03bc\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd 2 \u03ba\u03b1\u03b9 2,5. \u0393\u03b9\u03b1 \u03b5\u03c0\u03bf\u03c7\u03b9\u03ba\u03ac \u03c3\u03c4\u03b5\u03bb\u03ad\u03c7\u03b7 \u03b3\u03c1\u03af\u03c0\u03b7\u03c2, \u03ba\u03c5\u03bc\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd 0,9 \u03ba\u03b1\u03b9 2,1. \u039a\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b9\u03bb\u03b1\u03c1\u03ac \u03b5\u03af\u03bd\u03b1\u03b9 \u03ad\u03bd\u03b1 \u03b5\u03c0\u03b9\u03b2\u03bb\u03b7\u03c4\u03b9\u03ba\u03cc 12 \u03ad\u03c9\u03c2 18.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u039c\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03b4\u03b5\u03af\u03c4\u03b5 \u03c0\u03ce\u03c2 \u03ad\u03bd\u03b1 \u03b1\u03c1\u03ba\u03b5\u03c4\u03ac \u03bc\u03b5\u03b3\u03ac\u03bb\u03bf \u00a0\u03c3\u03b5 \u03c4\u03b1\u03c7\u03b5\u03af\u03b1 \u03b5\u03be\u03ac\u03c0\u03bb\u03c9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bd\u03cc\u03c3\u03bf\u03c5. \u0393\u03b9\u03b1 \u03c0\u03b1\u03c1\u03ac\u03b4\u03b5\u03b9\u03b3\u03bc\u03b1, \u03b5\u03ac\u03bd \u03c4\u03bf R\u03bf\u00a0\u03b5\u03af\u03bd\u03b1\u03b9 \u03af\u03c3\u03bf \u03bc\u03b5 2, \u03b4\u03b7\u03bb\u03b1\u03b4\u03ae \u03ad\u03bd\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03bc\u03bf\u03bb\u03cd\u03bd\u03b5\u03b9 (\u03ba\u03bf\u03bb\u03bb\u03ac\u03b5\u03b9) <strong>\u03bc\u03cc\u03bd\u03bf 1 <\/strong>\u03ac\u03bb\u03bb\u03bf \u03c3\u03b5 \u03bc\u03b9\u03b1 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b1, \u03c4\u03cc\u03c4\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf 1 \u03ac\u03c4\u03bf\u03bc\u03bf \u03c0\u03c1\u03bf\u03ba\u03b1\u03bb\u03b5\u03af \u03c4\u03b7\u03bd \u03b1\u03ba\u03cc\u03bb\u03bf\u03c5\u03b8\u03b7 \u03b1\u03bd\u03ac\u03c0\u03c4\u03c5\u03be\u03b7 \u03bd\u03ad\u03c9\u03bd \u03ba\u03c1\u03bf\u03c5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd:<br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 1 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b1: 2 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1 (1 \u03c4\u03bf \u03af\u03b4\u03b9\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03ba\u03b1\u03b9 1 \u03b1\u03c5\u03c4\u03cc \u03c0\u03bf\u03c5 \u03ba\u03cc\u03bb\u03bb\u03b7\u03c3\u03b5), <br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 2 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 4 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1<br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 3 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 8 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1 <br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 4 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 16 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"438\" data-attachment-id=\"1476\" data-permalink=\"https:\/\/lazaris.net\/lazaris\/chris\/r0-and-herd-immunity\/r0-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?fit=300%2C438&amp;ssl=1\" data-orig-size=\"300,438\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"R0-2\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?fit=205%2C300&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?fit=300%2C438&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?resize=300%2C438\" alt=\"\" class=\"wp-image-1476\" srcset=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?w=300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-2.png?resize=205%2C300&amp;ssl=1 205w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><figcaption>\u039f \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c4\u03c9\u03bd \u03ba\u03c1\u03bf\u03c5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd \u03bc\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc n \u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2 \u03bc\u03b5  Ro =1 <\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-justify\">\u039c\u03b5 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03c1\u03c5\u03b8\u03bc\u03cc \u03bf\u03bb\u03cc\u03ba\u03bb\u03b7\u03c1\u03bf\u03c2 \u03bf \u03c0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03bf\u03c2 \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc\u03c2 (7,8 \u03b4\u03b9\u03c3\u03b5\u03ba\u03b1\u03c4\u03bf\u03bc\u03bc\u03cd\u03c1\u03b9\u03b1) \u03b8\u03b1 \u03bc\u03bf\u03bb\u03c5\u03bd\u03b8\u03b5\u03af \u03bb\u03af\u03b3\u03bf \u03bb\u03b9\u03b3\u03cc\u03c4\u03b5\u03c1\u03bf \u03b1\u03c0\u03cc 33 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u038c\u03c4\u03b1\u03bd \u03cc\u03bc\u03c9\u03c2 \u03bf \u03c1\u03c5\u03b8\u03bc\u03cc\u03c2 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 &nbsp;R\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf\u03c2 \u03b1\u03c0\u03cc 1, \u03c4\u03cc\u03c4\u03b5 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03c0\u03bf\u03bb\u03cd \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b5\u03c4\u03b9\u03ba\u03ae \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1. \u0393\u03b9\u03b1 \u03c0\u03b1\u03c1\u03ac\u03b4\u03b5\u03b9\u03b3\u03bc\u03b1, \u03c6\u03b1\u03bd\u03c4\u03b1\u03c3\u03c4\u03b5\u03af\u03c4\u03b5 \u03cc\u03c4\u03b9 \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 R\u03bf&nbsp;= 0,5. \u03a4\u03ce\u03c1\u03b1 \u03c0\u03c1\u03bf\u03c6\u03b1\u03bd\u03ce\u03c2, \u03ad\u03bd\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03bc\u03bf\u03bb\u03cd\u03bd\u03b5\u03b9 \u03bc\u03b9\u03c3\u03cc \u03ac\u03c4\u03bf\u03bc\u03bf, \u03b1\u03bb\u03bb\u03ac \u03bd\u03b1 \u03b8\u03c5\u03bc\u03ac\u03c3\u03c4\u03b5 \u03cc\u03c4\u03b9 \u03b1\u03c5\u03c4\u03cc\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ad\u03bd\u03b1\u03c2 <strong>\u03bc\u03ad\u03c3\u03bf\u03c2<\/strong> \u03cc\u03c1\u03bf\u03c2: \u03c0\u03bf\u03c5 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 10 \u03ac\u03c4\u03bf\u03bc\u03b1 \u03b8\u03b1 \u03ba\u03bf\u03bb\u03bb\u03ae\u03c3\u03bf\u03c5\u03bd \u03ac\u03bb\u03bb\u03bf\u03c5\u03c2 5 \u03ae \u03c4\u03b1 100 \u03ac\u03c4\u03bf\u03bc\u03b1 \u03b8\u03b1 \u03ba\u03bf\u03bb\u03bb\u03ae\u03c3\u03bf\u03c5\u03bd \u03ac\u03bb\u03bb\u03bf\u03c5\u03c2 50. \u038c\u03c0\u03c9\u03c2 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03c5\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b1\u03bd \u03c5\u03c0\u03bf\u03b8\u03ad\u03c3\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03c3\u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae, \u03c4\u03cc\u03c4\u03b5 \u03bf \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c4\u03c9\u03bd \u03bd\u03ad\u03c9\u03bd \u03ba\u03c1\u03bf\u03c5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9:<br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 1 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b1: 0,5 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1<br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 2 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 0,25 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1 <br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 3 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 0,125 &nbsp;\u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1<br>\u039c\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc 4 \u03b5\u03b2\u03b4\u03bf\u03bc\u03ac\u03b4\u03b5\u03c2: 0,0625 \u03bd\u03ad\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1.<\/p>\n\n\n\n<p>\u039a\u03b1\u03b9 \u03c3\u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2 \u03b8\u03b1 \u03c3\u03b2\u03ae\u03c3\u03b5\u03b9 \u03b7 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"331\" data-attachment-id=\"1477\" data-permalink=\"https:\/\/lazaris.net\/lazaris\/chris\/r0-and-herd-immunity\/r0-0-5\/\" data-orig-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?fit=600%2C331&amp;ssl=1\" data-orig-size=\"600,331\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"R0-0.5\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?fit=300%2C166&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?fit=600%2C331&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?resize=600%2C331\" alt=\"\" class=\"wp-image-1477\" srcset=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?w=600&amp;ssl=1 600w, https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/R0-0.5.png?resize=300%2C166&amp;ssl=1 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption>\u039c\u03ad\u03c3\u03bf\u03c2 \u03cc\u03c1\u03bf\u03c2  \u03bd\u03ad\u03c9\u03bd \u03ba\u03c1\u03bf\u03c5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd \u03bc\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc n  \u03b2\u03b4\u03bc\u03ac\u03b4\u03b5\u03c2 \u03bc\u03b5 Ro=0,5<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u039f \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c2 \u03c1\u03c5\u03b8\u03bc\u03cc\u03c2 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2<\/h3>\n\n\n\n<p style=\"text-align: justify;\">\u0394\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03bf\u03c5 \u03cc\u03bc\u03c9\u03c2 \u03cc\u03c4\u03b9 \u03c4\u03bf&nbsp; Ro \u03c4\u03b7\u03c2 \u03b9\u03bb\u03b1\u03c1\u03ac\u03c2, \u03ae \u03ba\u03ac\u03c0\u03bf\u03b9\u03b1 \u03ac\u03bb\u03bb\u03b7\u03c2 \u03b5\u03c0\u03bf\u03c7\u03b9\u03ba\u03ae\u03c2 \u03b3\u03c1\u03af\u03c0\u03b7\u03c2, \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b1\u03c0\u03cc 1, \u03c0\u03ce\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03bf\u03bb\u03cc\u03ba\u03bb\u03b7\u03c1\u03bf\u03c2 \u03bf \u03ba\u03cc\u03c3\u03bc\u03bf\u03c2 \u03b4\u03b5\u03bd \u03ad\u03c7\u03b5\u03b9 \u03bc\u03bf\u03bb\u03c5\u03bd\u03b8\u03b5\u03af \u03bc\u03b5 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c4\u03b9\u03c2 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b5\u03c2 \u03b5\u03b4\u03ce \u03ba\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03ba\u03b1\u03b9\u03c1\u03cc; &nbsp;\u039f \u03bb\u03cc\u03b3\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03c4\u03bf Ro \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf <strong>\u03bc\u03ad\u03c3\u03bf\u03c2<\/strong> \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03b1\u03c4\u03cc\u03bc\u03c9\u03bd \u03c0\u03bf\u03c5 \u03ba\u03cc\u03bb\u03bb\u03b7\u03c3\u03b1\u03bd \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf, \u03ba\u03b1\u03b9 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf\u03b9 <strong>\u039f\u039b\u039f\u0399<\/strong> \u03c3\u03c4\u03bf\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc. \u0391\u03c5\u03c4\u03cc \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b3\u03af\u03bd\u03b5\u03b9 \u03b1\u03bd \u03ad\u03bd\u03b1 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03b5\u03b9\u03c3\u03ad\u03bb\u03b8\u03b5\u03b9 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03cc\u03c3\u03bc\u03bf\u03c5 \u03cc\u03c0\u03bf\u03c5 \u03b7 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 \u03b4\u03b5\u03bd \u03ad\u03c7\u03b5\u03b9 \u03c0\u03b5\u03c1\u03ac\u03c3\u03b5\u03b9 \u03c0\u03bf\u03c4\u03ad (\u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf COVID-19) \u03ba\u03b1\u03b9 \u03ad\u03c4\u03c3\u03b9 \u03bf\u03b9 \u03ac\u03bd\u03b8\u03c1\u03c9\u03c0\u03bf\u03b9 \u03b4\u03b5\u03bd \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03c4\u03b9\u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b4\u03b5\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03b5\u03bc\u03b2\u03cc\u03bb\u03b9\u03bf \u03b3\u03b9\u03b1 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1 \u03c4\u03bf\u03c5\u03c2. \u0388\u03bd\u03b1 Ro \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03c4\u03bf\u03c5 1 \u03b8\u03b1 \u03b4\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03ae\u03c3\u03b5\u03b9 \u03ad\u03bd\u03b1\u03bd \u03c0\u03bf\u03bb\u03cd \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc \u03ba\u03c1\u03bf\u03c5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd \u03cc\u03c0\u03c9\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03ac\u03c8\u03b1\u03bc\u03b5 \u03c0\u03b1\u03c1\u03b1\u03c0\u03ac\u03bd\u03c9.<\/p>\n<p style=\"text-align: justify;\">\u03a9\u03c3\u03c4\u03cc\u03c3\u03bf, \u03bc\u03cc\u03bb\u03b9\u03c2 \u03ad\u03bd\u03b1 \u03ac\u03c4\u03bf\u03bc\u03bf \u03b1\u03bd\u03b1\u03c1\u03c1\u03ce\u03c3\u03b5\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1, \u03b5\u03bb\u03c0\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03b8\u03b1 \u03b1\u03c0\u03bf\u03ba\u03c4\u03ae\u03c3\u03b5\u03b9 \u03b1\u03bd\u03c4\u03b9\u03c3\u03ce\u03bc\u03b1\u03c4\u03b1. \u0391\u03c5\u03c4\u03cc \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03bc\u03b5\u03c4\u03ac \u03b1\u03c0\u03cc \u03bb\u03af\u03b3\u03bf \u03b4\u03b5\u03bd \u03b8\u03b1 \u03b1\u03c3\u03c7\u03bf\u03bb\u03bf\u03cd\u03bc\u03b1\u03c3\u03c4\u03b5 \u03c0\u03bb\u03ad\u03bf\u03bd \u03bc\u03b5 \u03ad\u03bd\u03b1\u03bd \u03c4\u03b5\u03bb\u03b5\u03af\u03c9\u03c2 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc.<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1481\" data-permalink=\"https:\/\/lazaris.net\/lazaris\/chris\/r0-and-herd-immunity\/tokyo-street\/\" data-orig-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?fit=350%2C234&amp;ssl=1\" data-orig-size=\"350,234\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;eyetronic - Fotolia&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;eyetronic - Fotolia&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;Tokyo Street&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Crowd\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?fit=300%2C201&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?fit=350%2C234&amp;ssl=1\" class=\"alignleft size-medium wp-image-1481\" src=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?resize=300%2C201\" alt=\"\" width=\"300\" height=\"201\" srcset=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?resize=300%2C201&amp;ssl=1 300w, https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/crowd.jpg?w=350&amp;ssl=1 350w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\u039c\u03c0\u03bf\u03c1\u03b5\u03af \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03bd\u03b1 \u03c5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd \u03ba\u03b1\u03b9 \u03ac\u03bb\u03bb\u03bf\u03b9 \u03bb\u03cc\u03b3\u03bf\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03bf\u03c5\u03c2 \u03bf\u03c0\u03bf\u03af\u03bf\u03c5\u03c2 \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1 \u03ac\u03c4\u03bf\u03bc\u03b1 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03b1: \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03ac\u03bb\u03bb\u03bf\u03c5\u03c2 \u03bb\u03cc\u03b3\u03bf\u03c5\u03c2. \u0391\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03b5\u03bc\u03b2\u03cc\u03bb\u03b9\u03bf \u03ba\u03b1\u03b9 \u03c4\u03bf \u03ad\u03c7\u03bf\u03c5\u03bd \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03b1\u03c3\u03c4\u03b5\u03af \u03ae \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03bf\u03bc\u03bf\u03bd\u03c9\u03bc\u03ad\u03bd\u03b1 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03c5\u03c0\u03cc\u03bb\u03bf\u03b9\u03c0\u03bf \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u03a3\u03c4\u03b7\u03bd \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03be\u03b5\u03c4\u03ac\u03b6\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf\u03bd <strong>\u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc<\/strong> \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03bd\u03cc\u03c3\u03bf\u03c5, \u03c0\u03bf\u03c5 \u03bb\u03ad\u03b3\u03b5\u03c4\u03b1\u03b9 R\u00a0(\u03c3\u03ba\u03ad\u03c4\u03bf R) \u03ba\u03b1\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf \u03bc\u03ad\u03c3\u03bf\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03b5\u03bd\u03cc\u03c2 \u03bc\u03bf\u03bb\u03c5\u03c3\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b1\u03c4\u03cc\u03bc\u03bf\u03c5 \u03c0\u03bf\u03c5 \u03bc\u03bf\u03bb\u03cd\u03bd\u03b5\u03b9 (\u03ba\u03bf\u03bb\u03bb\u03ac\u03b5\u03b9) \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf\u03bd \u03ac\u03bb\u03bb\u03bf, \u03b1\u03bb\u03bb\u03ac \u03c3\u03b5 \u03ad\u03bd\u03b1\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc <strong>\u03cc\u03c0\u03bf\u03c5 \u03bc\u03b5\u03c1\u03b9\u03ba\u03bf\u03af \u03ac\u03bd\u03b8\u03c1\u03c9\u03c0\u03bf\u03b9 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03c4\u03b9\u03c3\u03ce\u03bc\u03b1\u03c4\u03b1<\/strong> (\u03ae \u03c5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd \u03ba\u03ac\u03c0\u03bf\u03b9\u03b5\u03c2 \u03ac\u03bb\u03bb\u03b5\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c0\u03c4\u03ce\u03c3\u03b5\u03b9\u03c2). \u03a6\u03c5\u03c3\u03b9\u03ba\u03ac \u03ba\u03b1\u03b9 \u03c4\u03bf R \u03ba\u03b1\u03b9 \u03c4\u03bf Ro\u00a0\u03c3\u03c7\u03b5\u03c4\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9. <\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u0393\u03b9\u03b1 \u03c0\u03b1\u03c1\u03ac\u03b4\u03b5\u03b9\u03b3\u03bc\u03b1, \u03b5\u03ac\u03bd \u03bc\u03cc\u03bd\u03bf \u03bf \u03bc\u03b9\u03c3\u03cc\u03c2 \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf\u03c2 R=0,5 (\u03c4\u03bf 0,5 \u03c4\u03bf \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03bf\u03cd) , \u03c4\u03cc\u03c4\u03b5 R=0,5*Ro\u00a0. \u00a0\u03a3\u03b5 \u03b1\u03c5\u03c4\u03ae\u03bd \u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7, \u03b5\u03ac\u03bd \u03c4\u03bf Ro \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf \u03ae \u03af\u03c3\u03bf \u03bc\u03b5 \u03c4\u03bf 2, \u03c4\u03cc\u03c4\u03b5 \u03c4\u03bf R\u00a0\u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf 1 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 <strong>\u0394\u0395\u039d <\/strong>\u03b8\u03b1 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03b1\u03c0\u03b5\u03af \u03c3\u03b5 \u03c0\u03b1\u03bd\u03b4\u03b7\u03bc\u03af\u03b1, \u03bf\u03cd\u03c4\u03b5 \u03ba\u03b1\u03bd \u03c3\u03b5 \u03b5\u03c0\u03b9\u03b4\u03b7\u03bc\u03af\u03b1. <\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u03a3\u03b7\u03bc\u03b5\u03af\u03c9\u03c3\u03b7: \u0395\u03c0\u03b5\u03b9\u03b4\u03ae <strong>\u03cc\u03bb\u03bf\u03c2<\/strong> \u03bf \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc\u03c2 \u03c4\u03b7\u03c2 \u03b3\u03b7\u03c2 (\u03c4\u03bf 100%) \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf\u03c2 \u03c3\u03c4o\u03bd \u03ba\u03bf\u03c1\u03c9\u03bd\u03bf\u03b9\u03cc (COVID-19), \u03c4\u03bf R = Ro\u00a0\u03ba\u03b1\u03b9 \u03b3\u03b9\u2019\u03b1\u03c5\u03c4\u03cc  \u03cc\u03bb\u03bf\u03b9  \u03bc\u03b9\u03bb\u03ac\u03bd\u03b5 \u03b3\u03b9\u03b1 \u03c4\u03bf Ro\u00a0\u03ba\u03b1\u03b9 \u03cc\u03c7\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03bf R\u00a0(\u03c0\u03bf\u03cd \u03b1\u03c5\u03c4\u03cc \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03ac\u03c4\u03c9 \u03b1\u03c0\u03cc \u03c4\u03bf 1)<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u039f \u03c3\u03c4\u03cc\u03c7\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bd\u03b1 \u03bc\u03b5\u03b9\u03c9\u03b8\u03b5\u03af \u03bf \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 (R) \u03ba\u03ac\u03c4\u03c9 \u03c4\u03bf\u03c5 1, \u03b5\u03af\u03c4\u03b5 \u03bc\u03b5 \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03b1\u03c3\u03bc\u03cc \u03b5\u03af\u03c4\u03b5 \u03bc\u03b5 \u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03b9\u03ba\u03ae \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7. \u00a0<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> \u0391\u03bd\u03bf\u03c3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b1\u03b3\u03ad\u03bb\u03b7\u03c2 <\/h3>\n\n\n\n<p class=\"has-text-align-justify\"><a href=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1479\" data-permalink=\"https:\/\/lazaris.net\/lazaris\/chris\/r0-and-herd-immunity\/heard\/\" data-orig-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?fit=425%2C282&amp;ssl=1\" data-orig-size=\"425,282\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"heard\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?fit=425%2C282&amp;ssl=1\" class=\"alignleft size-medium wp-image-1479\" src=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?resize=300%2C199\" alt=\"\" width=\"300\" height=\"199\" srcset=\"https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/lazaris.net\/lazaris\/chris\/wp-content\/uploads\/2020\/05\/heard.jpg?w=425&amp;ssl=1 425w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\u03a4\u03b9 \u03c3\u03c7\u03ad\u03c3\u03b7 \u03ad\u03c7\u03b5\u03b9 \u03cc\u03bb\u03b1 \u03b1\u03c5\u03c4\u03ac \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b1\u03b3\u03ad\u03bb\u03b7\u03c2; \u0397 \u03b3\u03b5\u03bd\u03b9\u03ba\u03ae \u03b9\u03b4\u03ad\u03b1 \u03c0\u03af\u03c3\u03c9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b1\u03b3\u03ad\u03bb\u03b7\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03c3\u03b5 \u03ad\u03bd\u03b1\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc \u03cc\u03c0\u03bf\u03c5 \u03c0\u03bf\u03bb\u03bb\u03bf\u03af \u03ac\u03bd\u03b8\u03c1\u03c9\u03c0\u03bf\u03b9 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c3\u03b5 \u03bc\u03b9\u03b1 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1, \u03b1\u03c5\u03c4\u03ae \u03b7 \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c3\u03c5\u03b3\u03ba\u03c1\u03b1\u03c4\u03b7\u03b8\u03b5\u03af \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03bc\u03b7\u03bd \u03b5\u03be\u03b5\u03bb\u03b9\u03c7\u03b8\u03b5\u03af \u03c3\u03b5 \u03b5\u03c0\u03b9\u03b4\u03b7\u03bc\u03af\u03b1, \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c4\u03b5\u03cd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03ad\u03c4\u03c3\u03b9 \u03c4\u03b1 \u03ac\u03c4\u03bf\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03ac\u03bb\u03c9\u03c4\u03b1. \u039f \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc\u03c2 (\u03b7 \u03b1\u03b3\u03ad\u03bb\u03b7) \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c4\u03b5\u03cd\u03b5\u03b9 \u03b1\u03c0\u03cc \u03bc\u03cc\u03bd\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03c4\u03b1 \u03b5\u03c5\u03ac\u03bb\u03c9\u03c4\u03b1 \u03ac\u03c4\u03bf\u03bc\u03b1.<\/p>\n\n\n\n<p style=\"text-align: justify;\">\u03a0\u03cc\u03c3\u03b1 \u03bb\u03bf\u03b9\u03c0\u03cc\u03bd \u03ac\u03c4\u03bf\u03bc\u03b1 \u03c3\u03b5 \u03ad\u03bd\u03b1\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c3\u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c3\u03c4\u03b7\u03bd \u03b1\u03b3\u03ad\u03bb\u03b7; \u0398\u03b5\u03c9\u03c1\u03ce\u03bd\u03c4\u03b1\u03c2 \u03cc\u03c4\u03b9 \u03c4\u03bf &nbsp;\u03b5\u03af\u03bd\u03b1\u03b9 2,5 \u03b3\u03b9\u03b1 \u03c4\u03bf\u03bd \u03ba\u03c9\u03c1\u03bf\u03bd\u03bf\u03b9\u03cc, \u03bc\u03b5 \u03bc\u03b1\u03b8\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac \u03ba\u03cc\u03bb\u03c0\u03b1, \u03b2\u03b3\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03c4\u03bf 60% \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1. (\u03b3\u03b9\u03b1 \u03c4\u03bf\u03c5\u03c2 \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03bc\u03bf\u03cd\u03c2 <a href=\"https:\/\/plus.maths.org\/content\/os\/issue14\/features\/diseases\/index\" target=\"_blank\" rel=\"noopener noreferrer\">\u03b5\u03b4\u03ce<\/a>)<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u03a0\u03ce\u03c2 \u03c4\u03bf \u03ba\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c5\u03c4\u03cc; \u0399\u03b4\u03b1\u03bd\u03b9\u03ba\u03ac \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf\u03c5\u03bb\u03ac\u03c7\u03b9\u03c3\u03c4\u03bf\u03bd \u03c4\u03bf 60% \u03c4\u03bf\u03c5 \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03bf\u03cd. \u0395\u03bb\u03bb\u03b5\u03af\u03c8\u03b5\u03b9 \u03cc\u03bc\u03c9\u03c2 \u03b5\u03bc\u03b2\u03bf\u03bb\u03af\u03bf\u03c5, \u03b5\u03bb\u03c0\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03b1\u03bd\u03bf\u03c3\u03af\u03b1\u03c2 \u03b8\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b5\u03c5\u03c7\u03b8\u03b5\u03af \u03c6\u03c5\u03c3\u03b9\u03ba\u03ac, \u03b1\u03c0\u03cc \u03bc\u03cc\u03bd\u03bf \u03c4\u03bf\u03c5, \u03b1\u03c0\u03cc \u03b1\u03bd\u03b8\u03c1\u03ce\u03c0\u03bf\u03c5\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c1\u03c1\u03c9\u03c3\u03c4\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03ba\u03b1\u03b9 \u03c0\u03bf\u03c5 \u03bc\u03b5\u03c4\u03ac \u03b8\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b1\u03bd\u03bf\u03c3\u03af\u03b1. \u0394\u03c5\u03c3\u03c4\u03c5\u03c7\u03ce\u03c2 \u03cc\u03bc\u03c9\u03c2 \u03b5\u03c0\u03b5\u03b9\u03b4\u03ae \u03c0\u03bf\u03bb\u03bb\u03bf\u03af \u03ac\u03bd\u03b8\u03c1\u03c9\u03c0\u03bf\u03b9 \u03c0\u03b5\u03b8\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03b1\u03c0\u03cc \u03c4\u03bf COVID-19, \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03b1\u03c6\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03bb\u03cd\u03c3\u03b5\u03b9 \u03c4\u03bf\u03bd \u03c0\u03bb\u03b7\u03b8\u03c5\u03c3\u03bc\u03cc, \u03bc\u03b5 \u03c4\u03b7\u03bd \u03c0\u03b5\u03c0\u03bf\u03af\u03b8\u03b7\u03c3\u03b7 \u03cc\u03c4\u03b9 \u03be\u03ad\u03c1\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b1 \u03ba\u03c1\u03bf\u03cd\u03c3\u03bc\u03b1\u03c4\u03b1 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b1\u03bd\u03bf\u03c3\u03af\u03b1.<\/p>\n\n\n\n<p style=\"text-align: justify;\">\u0395\u03af\u03bd\u03b1\u03b9 \u03bb\u03bf\u03b9\u03c0\u03cc\u03bd, \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c4\u03b5\u03cd\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b1 \u03b5\u03c5\u03ac\u03bb\u03c9\u03c4\u03b1 \u03ac\u03c4\u03bf\u03bc\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c5\u03b3\u03b5\u03af\u03b1\u03c2, \u03c0\u03bf\u03c5 \u03ad\u03bd\u03b1 \u03bc\u03b5\u03b3\u03ac\u03bb\u03bf \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03cc\u03c3\u03bc\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03b5\u03c0\u03af \u03c4\u03bf\u03c5 \u03c0\u03b1\u03c1\u03cc\u03bd\u03c4\u03bf\u03c2 \u03c3\u03b5 \u03ba\u03b1\u03c1\u03b1\u03bd\u03c4\u03af\u03bd\u03b1. \u039a\u03b1\u03c4\u03ac \u03b5\u03b9\u03c1\u03c9\u03bd\u03b9\u03ba\u03cc \u03c4\u03c1\u03cc\u03c0\u03bf, \u03bf\u03b9 \u03ba\u03b1\u03c1\u03b1\u03bd\u03c4\u03af\u03bd\u03b5\u03c2 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03cc\u03c4\u03b9 \u03c0\u03bf\u03bb\u03bb\u03bf\u03af \u03b1\u03c0\u03cc \u03b5\u03bc\u03ac\u03c2 \u03b4\u03b5\u03bd \u03c0\u03b1\u03af\u03c1\u03bd\u03bf\u03c5\u03bd \u03b1\u03bd\u03c4\u03b9\u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03ae \u03b1\u03bd\u03bf\u03c3\u03af\u03b1 \u03c3\u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b7 \u03b5\u03c0\u03b9\u03b4\u03b7\u03bc\u03af\u03b1 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b1\u03c5\u03be\u03b7\u03b8\u03b5\u03af \u03be\u03b1\u03bd\u03ac \u03bc\u03cc\u03bb\u03b9\u03c2 \u03b1\u03c1\u03b8\u03bf\u03cd\u03bd \u03c4\u03b1 \u03bc\u03ad\u03c4\u03c1\u03b1 \u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7\u03c2.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u03a4\u03b9 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 \u03bb\u03bf\u03b9\u03c0\u03cc\u03bd \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03c7\u03b5\u03b9\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf \u03c3\u03b5\u03bd\u03ac\u03c1\u03b9\u03bf; \u039c\u03b9\u03b1 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae \u03b8\u03b1 \u03ae\u03c4\u03b1\u03bd \u03bd\u03b1 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\u03b4\u03b9\u03b1\u03b4\u03bf\u03c7\u03b9\u03ba\u03ad\u03c2 \u03b1\u03c5\u03be\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b9\u03b4\u03b7\u03bc\u03af\u03b1\u03c2 \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03b3\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b1 \u03b4\u03b9\u03b1\u03bb\u03b5\u03af\u03bc\u03bc\u03b1\u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03c9\u03bd \u03c3\u03c5\u03c3\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd \u03c5\u03b3\u03b5\u03af\u03b1\u03c2<\/p>\n\n\n\n<p style=\"text-align: justify;\">\u0397 \u03b1\u03bb\u03ae\u03b8\u03b5\u03b9\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7 \u03c3\u03c4\u03b9\u03b3\u03bc\u03ae \u03ba\u03b1\u03bd\u03b5\u03af\u03c2 \u03b4\u03b5\u03bd \u03be\u03ad\u03c1\u03b5\u03b9 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03c2 \u03c4\u03b9 \u03b8\u03b1 \u03c3\u03c5\u03bc\u03b2\u03b5\u03af \u03c3\u03c4\u03bf \u03bc\u03ad\u03bb\u03bb\u03bf\u03bd. \u039f\u03b9 \u03b5\u03b9\u03ba\u03b1\u03c3\u03af\u03b5\u03c2 \u03bc\u03b1\u03c2 \u03c0\u03c1\u03bf\u03ad\u03c1\u03c7\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03bc\u03b1\u03b8\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac \u03bc\u03bf\u03bd\u03c4\u03ad\u03bb\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03bf\u03c3\u03c0\u03b1\u03b8\u03bf\u03cd\u03bd \u03ba\u03b1\u03b9 \u03c0\u03c1\u03bf\u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03c0\u03bf\u03c1\u03b5\u03af\u03b1 \u03c4\u03b7\u03c2 \u03c0\u03b1\u03bd\u03b4\u03b7\u03bc\u03af\u03b1\u03c2. \u039c\u03c0\u03bf\u03c1\u03b5\u03af\u03c4\u03b5 \u03bd\u03b1 \u03bc\u03ac\u03b8\u03b5\u03c4\u03b5 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b1 \u03b3\u03b9\u03b1 \u03b1\u03c5\u03c4\u03ac \u03c4\u03b1 \u03bc\u03bf\u03bd\u03c4\u03ad\u03bb\u03b1 <a href=\"https:\/\/plus.maths.org\/content\/how-can-maths-fight-pandemic\" target=\"_blank\" rel=\"noopener noreferrer\">\u03b5\u03b4\u03ce<\/a>. \u0388\u03c7\u03b5\u03b9 \u03b3\u03af\u03bd\u03b5\u03b9 \u03b5\u03c0\u03b5\u03af\u03b3\u03bf\u03c5\u03c3\u03b1 \u03ba\u03bb\u03ae\u03c3\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c3\u03c4\u03b7\u03bc\u03bf\u03bd\u03b9\u03ba\u03ae \u03ba\u03bf\u03b9\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b2\u03c1\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b5\u03c2 \u03c3\u03c4\u03c1\u03b1\u03c4\u03b7\u03b3\u03b9\u03ba\u03ad\u03c2 \u03b5\u03be\u03cc\u03b4\u03bf\u03c5 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c4\u03c1\u03ad\u03c7\u03bf\u03c5\u03c3\u03b1 \u03ba\u03b1\u03c4\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bc\u03b1\u03c2.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">\u0393\u03b5\u03bd\u03b9\u03ba\u03ac, \u03bf\u03b9 \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03bc\u03bf\u03af \u03bc\u03b1\u03c2 \u03c3\u03c4\u03ad\u03bb\u03bd\u03bf\u03c5\u03bd \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03ad\u03bd\u03b1 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc \u03bc\u03ae\u03bd\u03c5\u03bc\u03b1 \u03c3\u03c7\u03b5\u03c4\u03b9\u03ba\u03ac \u03bc\u03b5 \u03c4\u03bf\u03bd \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03b1\u03c3\u03bc\u03cc: \u03cc\u03c7\u03b9 \u03bc\u03cc\u03bd\u03bf \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c4\u03b5\u03cd\u03b5\u03b9 \u03c4\u03bf \u03ac\u03c4\u03bf\u03bc\u03bf \u03c0\u03bf\u03c5 \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03c3\u03b8\u03ad\u03bd\u03b5\u03b9\u03b1, \u03b1\u03bb\u03bb\u03ac \u03ba\u03b1\u03b9 \u03b5\u03ba\u03b5\u03af\u03bd\u03bf\u03c5\u03c2 \u03c4\u03bf\u03c5\u03c2 \u03b1\u03bd\u03b8\u03c1\u03ce\u03c0\u03bf\u03c5\u03c2 \u03c0\u03bf\u03c5 \u03b3\u03b9\u03b1 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03bb\u03cc\u03b3\u03bf \u03b4\u03b5\u03bd \u03b8\u03b1 \u03b5\u03bc\u03b2\u03bf\u03bb\u03b9\u03b1\u03c3\u03c4\u03bf\u03cd\u03bd 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1481,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[389,158,424,144],"tags":[159,160,167,168,169],"class_list":["post-1475","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-covid","category-health","category-other","category-science","tag-coronavirus","tag-cov-19","tag-r0","tag-168","tag-169"],"yoast_head":"<!-- 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