Travel

Researchers estimate that 25-80% of people infected with coronavirus have no idea they've got it, and don't exhibit symptoms while they're infectious.

"Airlines want the U.S. government to administer temperature checks to all passengers in a bid to reassure the public" -- but really only for PR purposes, not because it will actually do anything to prevent the spread of coronavirus.

This is why mask-wearing is so important -- to reduce the chance that someone who is unknowingly infected will pass it on to other people.