Health

Masks made with common household fabrics help prevent the spread of viruses like Covid-19 as researchers have found that they are considerably effective at blocking droplets similar to those that may be released by speaking, coughing and sneezing, even as a single layer. ...

The Bacille Calmette-Guerin or BCG vaccine, originally made against tuberculosis, gives an effective preventive action against various infections -- possibly also against Covid-19, say researchers, adding that it also protects elderly people from respiratory infections. ...