Bits of viral genes incorporated into human DNA have been linked to cancer, ALS and schizophrenia. But many of these genes may not be harmful, and could even protect against infectious disease.

Wastewater may capture the number of COVID-19 infections in a community—even before testing results or hospitals become overcrowded.

About 30 million Americans will get the flu this year. Here are some tips for at-home treatments to sooth symptoms.

A virus that affects rabbits has evolved to be more deadly. The finding highlights the need for rigorous monitoring of human viruses.

There are still lots of good reasons to wash our hands, but avoiding the flu isn't one of them, says expert Emanuel Goldman.

A pediatrician explains what parents should know about enterovirus D68, a respiratory virus associated with a rare polio-like illness.

Researchers have modified the CRISPR gene editing tool to serve as a diagnostic test for the presence of SARS-CoV-2, the virus that causes COVID.

Antiretroviral therapies for HIV, while extremely effective, need to be taken daily for life. Designing antibody treatments that need to be taken only once could improve compliance and reduce drug resistance.

With each new variant of SARS-CoV-2, there's concern that rapid testing may not be able to keep up. New research tries to figure things out.

What does a recent case study of a man who developed monkeypox after being at an outdoor festival, but not engaging in sex, tell us about the virus?