Weekly Health Quiz: Coronavirus Testing, Exercise and a Strange Brain Disorder

The United States reported its highest number of confirmed coronavirus cases this week, with the daily total exceeding:

True or false? Coronavirus cases continue to mount in the United States, but death rates continue to decline:

This country now has more than a million confirmed cases of coronavirus, ranking third in the world behind the United States and Brazil:

True or false? If you test positive for coronavirus antibodies, you are protected against future infections from the virus:

Of the following treatments, this drug has shown the most promise in treating Covid infections:

Aphantasia is a brain condition characterized by an inability to:

A mysterious protein known as GPLD1, produced by the liver during exercise, is thought to strengthen this organ: