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

In people with the genetic condition, inflammation can cause a mild infection to snowball out of control, a study finds.

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

A bacterium that produces an insulin-like peptide can give mice type 1 diabetes, and infection with the microbe seems to predict the onset of the disease in humans, a study finds.

The newly authorized intradermal vaccination only requires one-fifth of the usual vaccine dose. This will help stretch out the limited vaccine supply, experts say, but only if healthcare personnel receive sufficient training.

The Scientist asks Brigham and Women’s Hospital infectious disease specialist Lindsey Baden about testing for prior infections.

The results could help guide the design of new vaccines for the disease.

Researchers find that tissue-resident memory T cells in the corneas of mice engender a lasting immune response.

The work reveals that the pandemic flu was likely the direct predecessor of the seasonal H1N1 flu that circulated for decades.

A mouse study points to a possible mechanism by which the smallpox vaccine helped eradicate the disease in the 1980s.

The virus’s ability to slip directly from one cell to another may help it avoid some of the body’s immune responses.

A study that transfused plasma from active to inactive mice suggests the protein clusterin enhances cognition.

If the immune system makes mistakes—reacting late or getting the target wrong—it can amplify the damage wrought by SARS-CoV-2.