Coronavirus immunity can start to fade away within weeks according to a new study which puts a 'nail in the coffin' in the idea of herd immunity.
https://www.yahoo.com/news/coronavirus-immunity-start-fade-away-121036007.html
No herd immunity which means no vaccine will be effective.
https://www.yahoo.com/news/coronavirus-immunity-start-fade-away-121036007.html
No herd immunity which means no vaccine will be effective.