An effective nasal vaccine could stop the virus that causes COVID-19 right at its point of entry. But devising one that works has been a challenge for researchers.

Inflammation is a complicated and important part of how the immune system responds to threats to the body. But when the inflammatory response goes awry, it can lead to serious problems.

A new species of bacteria that doesn’t normally live in the gut may trigger an immune response so strong that it spreads to the joints.

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.

When COVID-19 and the flu co-infect, it’s ‘flurona.’ But such cases are rare, and there are effective ways to protect yourself from both viruses.

A vaccine delivered through the nose is the key to ultimately controlling the COVID-19 pandemic, an expert argues.

"This is significant progress toward a viable HIV vaccine. While we know this will be a many-step process, each step is an advancement toward our goal."

A new study finds that misdirected immune responses can persist for months in those who are suffering from long COVID-19.

Listeria causes serious illness and food recalls nearly every year.