المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : Covid cases in schools 'reflect community levels'


BECKHAM
17-12-2020, 05:02 PM
Pupils and staff have infection rates which mirror rates outside the school gates, a study found.

for more .... (https://www.bbc.co.uk/news/health-55340597)