Novel therapies, improved technologies and a better understanding of the immune system could yield broad dividends.

Protecting the immunocompromised is not only a matter of health equity, it’s critical to ending the pandemic.

The CDC’s move triggered mixed feelings from the public and laid bare a split within the health care community.

Transplant recipients, people with advanced HIV and certain people with cancer or autoimmune diseases can get an additional vaccine dose.

Are we fully vaccinated, even with a booster, or should we get a third shot to catch up with those who got Pfizer or Moderna?

People with moderate to severe immune suppression are eligible for a fourth COVID vaccine dose.

Home antigen testing is a useful tool to curb the pandemic, but it is often misused and may provide false confidence.

Public health officials are recommending that people upgrade from their cloth masks to higher-quality medical-grade masks.

The Supreme Court has overturned the OSHA rule that says large companies must require either vaccination or masks and regular testing.

It’s been more than six months since many Americans finished their COVID-19 vaccination series, and their immunity may be waning.