Source: United States & Canada – South China Morning PostThe administration of US President Joe Biden is buying 500 million doses of the Pfizer-BioNTech Covid-19 vaccine to distribute among other countries, US media reported on Wednesday, citing people familiar with the matter.Biden will make the formal announcement at the G7 meeting in Britain this week, The Washington Post and New York Times reported.The move comes as the United States faces pressure to do more about the global vaccine shortage, with rich countries having bought the lion’s share of…Read More