Better masks%2C adequate ventilation must to curb Covid indoors
Bhubaneswar%2C April 7 %28SocialNews.XYZ%29 A commercial five-layered mask coupled with social distancing and good ventilation may be key to curtail the spread of SARS-CoV-2%2C the virus that causes Covid-19%2C in enclosed spaces like offices%2C prisons%26%238230%3B