BECKHAM
17-02-2021, 07:09 AM
Deaths are falling faster for the over-80s - but does that mean the vaccine is working?
for more .... (https://www.bbc.co.uk/news/health-56072684)
for more .... (https://www.bbc.co.uk/news/health-56072684)
مشاهدة النسخة كاملة : Covid: How will we know if the vaccine is working?