The virus that causes COVID-19 spreads mainly through the air when a person coughs, sneezes, sings, talks or breathes. Virus particles can drift in the air and be inhaled, especially in crowded places ...

When it comes to holiday travel, there's a question on many people's minds -- should you still wear a face mask? Dr. John Brownstein, an epidemiologist at Boston Children's Hospital, says it depends. ...