Covid-19 vaccines: two doses of Pfizer and Moderna vaccines needed, officials say, but questions persist
[ad_1] He later clarified in a second tweet that he was not recommending that this was 100% the way forward, but that it was worth “giving states the flexibility to try it”. Although 80.5 million doses of the vaccine have been administered in the United States and the Johnson & Johnson single-dose vaccine enters the … Read more