The anti-parasitic drug ivermectin, which has surged in popularity as an alternative treatment for Covid-19 despite a lack of strong research to back it up,

The next wave of Covid-19 is coming, and in some parts of the United States, it’s already here. Are you ready? The culprit this time

From Wyoming to Maine, an outbreak of the highly contagious bird flu has swept across farms and backyard flocks in the United States this year,

The FDA has authorized additional shots for older Americans and those with certain immune deficiencies. Here’s what scientists know about who needs the doses, and