Amid a shortage of medical-grade masks, federal guidelines now recommend everyone wear face coverings out in public. Here's ...

With new and more transmissible Covid-19 variants doing the rounds, Germany has made it mandatory to wear medical-grade masks in public settings, which tells us a lot about how effective cloth masks ...

an effective measure against the new coronavirus, and the Ministry of Health, Labor and Welfare also recommends wearing a mask in medical institutions and crowded places. Meanwhile, a research team at ...