Despite the halt to the federal mask mandate for mass transit, people may still choose to protect themselves. For those who do, the type of mask and how well it fits matter.

England has stopped offering free COVID tests, amid a large surge in cases. Here’s what that could mean.

The constantly changing COVID-19 rules can be frustrating. But this pandemic is like no other public health crisis in history. It is better to think of the virus and US responses the way we think about hurricanes.

The latest addition to the omicron lineage has been making waves in Europe. Whether it will do the same in the U.S. depends on rates of vaccination and prior infection.

New research offers insights into the brain after COVID-19 that may have implications for our understanding of long COVID-19 and how the disease affects our senses of taste and smell.

The CDC’s controversial recommendation changes are based on new studies showing that most omicron transmission takes place within five days of the onset of illness.

Because COVID-19 is a relatively new virus, researchers still aren’t sure exactly how long vaccines and prior infections provide protection.

Calculating your risk of death or hospitalization if you are infected with the coronavirus requires good data – notably, the total number of infections in the US. Unfortunately, that data is fuzzy.

Social scientists find that using geography-related names or racialized framing around the coronavirus in even one news story can trigger racist stereotypes and biases.

Scientists have been testing captive and wild animals for the coronavirus since the pandemic began. Only a few wild species are known to carry the virus, but many more have been shown to be susceptible.