The potent new adjuvant could be used to help make vaccines against HIV and other infectious diseases.

Will fears about the newly discovered Omicron variant pan out or is it just a lot of hype? Too early to tell, an expert warns.

People who report anxiety or depression are more likely to use "sextech," as a way to relieve their psychological distress, researchers find.

A new freeze-dried vaccine formula that looks a lot like green cotton candy has potential for use as a COVID-19 vaccine that wouldn't need refrigeration.

Voice assistants like Alexa, Siri, and Google Assistant answer health questions, but how reliable is the info? New research reveals room to improve.

This finding suggests public health efforts will have to address the treatment barriers these men face – like poverty or homophobia – to meet the nation’s goal of ending the HIV epidemic by 2030.

Is it risky to sing in a choir? What are the risks of eating in a small restaurant? How much difference does it make to open windows or clean surfaces? New

With Omicron landing in the U.S. this week, Harvard epidemiologist William Hanage reviewed what we know and the many things still unknown about the fast-moving coronavirus variant.

In a comparison study, the Moderna vaccine was slightly more effective than the Pfizer vaccine in preventing COVID-19 infection, hospitalization, and death.

Breakthrough COVID-19 cases in vaccinated people may be less likely to spread infection because virus is shed for a shorter period of time as opposed to infections in unvaccinated people.