Post infection natural immunity, debate and implications for mandatory vaccination https://www.bmj.com/content/374/bmj.n2101 US as of 11th December 2020 https://web.archive.org/web/20210115184811/https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/burden.html US, Natural infection, Feb 2020 to May 2021 0 – 17 26.8 / 73 37% 18 – 49 60.5 / 138 44%…
Herd immunity will not come Prof Andrew Pollard, Oxford vaccine team Clear that the delta variant can infect people already vaccinated Making herd immunity impossible to reach even with high vaccine uptake Anyone who is still unvaccinated will, at some…
USA, Natural immunity key Nationwide Blood Donor Seroprevalence Survey Data, gathered from blood donors Estimates of population, 16 and older, have developed antibodies Vaccination or infection? March 21st 2021 Seroprevalence, 49.1% Over 16 vaccinated, 13.7% Cumulative reported cases, 8.7% Deaths…