Over the last few months public health guidance to prevent the spread of COVID-19 has called on people to wash hands, stifle sneezes, wear masks and keep their distance — measures to contain particles expelled […]

Over the last few months public health guidance to prevent the spread of COVID-19 has called on people to wash hands, stifle sneezes, wear masks and keep their distance — measures to contain particles expelled […]
Around the world people are staying inside, keeping their distance from others, washing hands and sterilizing surfaces in hopes of slowing the spread of COVID-19. To understand why these measures are necessary and what others […]