Ivermectin is a global con, sold by unscrupulous doctors and healthcare professionals as a treatment for Covid. It doesn't work.

We need to open our windows to reduce the transmission of Covid-19 in our buildings and classrooms. Fresh air helps remove viral particles from our environment.

A central question for scientists championing boosters is why rates have stalled among people 65 and older.

The United States now has 12 million confirmed Covid-19 cases. On Thursday, we had a record-setting day of 187,000 new cases of the coronavirus. Over 250,000 Americans...