Amid a steady rise in monkeypox cases worldwide, an expert explains how the virus is transmitted, who is at risk, and how vaccines can control the spread.

Signals people receive from family and friends may have more influence over the likelihood they'll get a COVID-19 vaccine than public health messages.

According to a letter from Biden’s doctor, the president has a runny nose, mild fatigue and a slight cough. The letter also noted that Biden began taking an antiviral drug the morning he tested positive.

Many people report changes in their period after getting the COVID vaccine, especially for those who don’t typically have them, a new study finds.

With particles that release their payloads at different times, one injection could provide multiple vaccine doses.

An Inhalable COVID-19 vaccine tested in a rodent model targets the lungs specifically and effectively. One day, you may be able to self-administer it.

On the horizon: A new omicron-focused version of the Moderna vaccine that may offer longer protection and a stronger immune response.

With COVID-19 shots finally available for infants and preschoolers, knowing how to combat misinformation on social media and elsewhere could be more important than ever.