The coronavirus that causes COVID-19 spreads through droplets that we spew as we breathe, talk, cough and sneeze — so tiny that they're invisible to the naked eye. Some researchers aim to learn more about transmission by trying to make invisible sneezes, coughs and breaths more visible. They can infect another person who:Comes into contact with those droplets through their eyes, nose or mouth (droplet transmission). Touches objects or surfaces on which droplets have landed and then touches their eyes, nose or mouth (contact transmission). Scientists in the 19th century showed respiratory droplets from a person's nose and mouth can carry micro-organisms such as bacteria and viruses.

Source: CBC News May 02, 2020 08:01 UTC