COVID-19: Why Indian Govt. Is Advising Against The Use Of Valved N95 Masks

As of today, there are 15,671,720 COVID-19 cases with 636,832 deaths. On a hopeful note, 9,557,084 have recovered. The virus outbreak that began in 2019 continues to cause casualties and vaccine trials are undergoing now, with the Oxford Covid-19 vaccine ChAdOx1
http://dlvr.it/RcPKJn