The University of Miami researcher studies how a mysterious group of supersized viruses infects and influences the evolution of their hosts.

The “tripledemic” shines a spotlight on viral interference, in which one infection can block another.

Redondoviruses, which have been associated with cases of periodontitis and other diseases, turn out to live inside the amoeba Entamoeba gingivalis.

In flies and mice, a viral protein increases the rate of energy use by heart cells. But it’s not yet clear if the finding applies to humans.

The National Institute of Allergy and Infectious Diseases was not aware that the work involved a chimeric strain of SARS-CoV-2, STAT reports.

Low booster rates and immune-evading SARS-CoV-2 variants could spell bad news, experts say. 

Nearly 50 million birds have been culled amid efforts to mitigate the spread of the virus, which continues to ravage the Northern Hemisphere.

BA.2.75 is spreading rampantly in India and has so far reached at least 20 other countries, but it doesn’t seem to be outcompeting other Omicron SARS-CoV-2 subvariants.

Here’s what we know so far about a new virus detected in eastern China.

Several mechanisms contribute to the increased transmissibility of this SARS-CoV-2 variant.

With a global alarm ringing because of an unprecedented outbreak of monkeypox, we should also consider a different but closely related viral threat.

Roseolovirus infection disrupts how the body trains immune cells not to attack it, a mouse study shows.

Hultin’s work helped identify the virus behind the 1918 flu pandemic.