The Coronavirus Outbreak

Here’s what to know about the fall COVID boosters, which the Centers for Disease Control and Prevention has recommended for all people aged six months and older

An updated COVID vaccine will be available soon, but certain groups may benefit more than others

New research suggests that blood clotting from COVID infections could contribute to long-term brain fog and other cognitive issues

Research is under way to determine whether the mutation-laden lineage BA.2.86 is nothing to worry about — or has the potential to spread globally

The drug metformin cut long COVID risk by 41 percent in both people who were overweight and those with obesity. But treatments remain elusive

Genetic susceptibilities, the environment and the body’s response to inflammation all influence our odds of falling ill

The COVID pandemic put mRNA technology, long in development, to the test. Here’s a look at how it might fight cancer and when it might reach patients

The COVID pandemic caused a U.S.-wide decline in fertility rates, but red states actually saw increases

Brain fog is such a nebulous term in long COVID that it delegitimizes efforts to get disability accommodations and medical leave

Laser-based optical frequency combs, originally developed to time atomic clocks, can also perform fast, noninvasive tests for COVID—and potentially other diseases as well

As the federal public health emergency is set to expire on May 11, here’s what you need to know about future COVID testing, treatment and vaccines

The World Health Organization has declared that COVID is no longer a “public health emergency of international concern” but cautions that it is still an ongoing health issue