DNA: N-95 mask turned `negative` in corona test
Zee News Jul 21, 2020, 22:40 PM IST,
One of the measures to avoid the coronavirus is 'mask' and the most talked about mask at the moment is 'N-95'. Recently, the Health Ministry has warned all states and union territories against the use of N-95 masks with valved respirators by the people, saying that they do not prevent the spread of the coronavirus.