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.

Bats are known for staying healthy even while harboring viral infections. Now, research sheds light on how their unusual immune system evolved.

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.

A high-fat diet induced changes to the animals’ vaginal microbiomes that boosted survival after exposure to the virus.

Mammals that give birth to live young may have evolved to make use of the remnants of viruses in their genomes to ward off pathogens, a study suggests. 

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

Recent studies have lent support for a variety of hypotheses explaining the debilitating symptoms affecting millions of people after SARS-CoV-2 infection.  

The outbreak of the Sudan strain of ebolavirus, which includes eight other suspected cases, is the first to hit Uganda in more than a decade.

Immune cells deliver packages of telomeres to T cells, helping them retain their virus-fighting function over time, research suggests.

Immune defense genes in bacteria and archaea can identify viral proteins, a study finds, revealing similarities between the immune systems of prokaryotic and eukaryotic organisms.

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.