Researchers have figured out a mechanism SARS-CoV-2, the virus that causes COVID-19, uses to co-opt infected human cells to boost its own replication.

A new approach that shows how the immune system responds to vaccination could lead to ways to build a better flu vaccine, researchers say.

The way our immune systems react to COVID-19 could crack one of the pandemic's greatest mysteries: Why do some people get so sick while others don't?

The immune systems of seriously ill COVID-19 patients can't do enough to protect them. Boosting immune cell activity may offer a good treatment strategy.

Among deep-sea anglerfishes, tiny males permanently attack to relatively gigantic females. New understanding of this process could benefit human health.

New research digs into why some people have more severe cases of COVID-19. It also may point to ways to treat serious cases of the disease.

When combined into one, two types of immunotherapy appear more effective than either one alone for blood cancers like leukemia.

New research suggests how additives called adjuvants might become part of a universal vaccine and protect people from a wider variety of influenza strains.

A weakend immune system, not HIV itself, may explain why children with HIV have a higher risk of cavities.

"These interim results are very encouraging," says Evan Anderson of a COVID-19 vaccine in a phase 1 clinical trial.