The use of masks is very important to help us not contract the covid-19 virus but it is also important that we keep in mind that our care can also help us contribute, maintain distance, try to visit fewer people who have symptoms of flu, if you are on the street do not touch your mucous membranes, nose, mouth and eyes, as there is still no vaccine against this disease try to take hot teas to help raise your defenses ... thanks for sharing such important information