疫苗好消息，AZ疫苗对巴西变种有效，另外英国死亡下降了41%

Exclusive: Oxford study indicates AstraZeneca effective against Brazil variant, source says https://www.reuters.com/article/us-health-coronavirus-brazil-variant-exc/exclusive-oxford-study-indicates-astrazeneca-effective-against-brazil-variant-source-says-idUSKBN2AX1NS
另外英国40%成人接种了至少一dose疫苗，过去一周死亡下降了41% https://www.itv.com/news/2021-03-05/covid-deaths-fall-by-41-in-past-week-as-40-uk-adult-population-vaccinated-matt-hancock-announces

担心巴西模式的不要太紧张了，不会在其他发达国家重演的