Thu, 01 Jan 1970 01:00:00 +0100Fri, 24 Jul 2026 15:38:01 +0200https://english.radio.cz/czech-study-shows-extremely-low-level-collective-immunity-covid-19-virus-8101001© 2026 Radio Prague International A government-commissioned collective immunity study aimed at establishing the level of Covid-19 infection within the population shows that the prevalence of the virus is in the order of “units per mille”. The result rules out the option of relying on “herd immunity” in the event of a second wave of the pandemic. encr@radio.cz (Cesky Rozhlas)webmaster@radio.cz (CRo Webmaster) https://english.radio.cz/sites/default/files/images/koronavirus_test1_0.jpg?timestamp=1590328470 https://english.radio.cz/czech-study-shows-extremely-low-level-collective-immunity-covid-19-virus-8101001 Radio Prague International Radio Prague International radio.prague.int@gmail.com clean 0 1 2 3 4 5 6 7 8 9