COVID-19 Basics

Superspreading events occur when a single infected person spreads the virus to a large number of people, usually due to attending a large, indoor event.

Some people have said that inhaled steroids, like the kind prescribed for people with asthma, treat COVID-19. But so far, no studies have been done.

Doctors have done several studies to see if hydroxychloroquine treats or prevents COVID-19. It doesn’t. And it might cause other health problems.

Early data suggests that if given early to hospitalized patients, remdesivir may be of benefit for those with moderate to severe COVID-19.

There have been no confirmed cases in the scientific literature of people being infected a second time by the virus that causes COVID-19.

The COVID-19 death rate is down from its peak. But there are a few reasons for that, and the rate will probably rise again soon, so stay vigilant!

The 1918 flu pandemic holds lessons for today’s COVID-19 pandemic.

There is evolving data about whether COVID-19 transmission commonly occurs by aerosol transmission. For most people, the answer to this scientific debate probably won’t make a huge difference in the...

Mathematical models have been used to predict the spread of COVID-19 and are updated when new data are available.

The coronavirus that is causing this pandemic probably infected bats before it jumped to humans.