Covid vaccination and 60% herd immunity DO NOT work ! here is the proof:
https://www.bloomberg.com/news/articles/2021-05-04/world-s-most-vaccinated-nation-reintroduces-curbs-as-cases-surge
Covid vaccination and 60% herd immunity DO NOT work ! here is the proof:
https://www.bloomberg.com/news/articles/2021-05-04/world-s-most-vaccinated-nation-reintroduces-curbs-as-cases-surge