The WHO says SARS-CoV-2, the virus that causes COVID-19, spreads primarily through small droplets expelled from the nose and mouth of an infected person that quickly sink to the ground
from Livemint - Science https://ift.tt/2ZHKYnv
https://ift.tt/eA8V8J
from Livemint - Science https://ift.tt/2ZHKYnv
https://ift.tt/eA8V8J
إرسال تعليق