Data show that infection and vaccination change the expression of certain genes, which may make the flu shot more effective or lead to a universal vaccine.

A spreadable rabies vaccine could work better than the current policy of culling bats that spread the disease.

An antibody that gunks up the machinery that flu viruses use to replicate in mice could be the first step towards a universal flu vaccine.

A natural chemical may offer a way to vaccinate tomato plants and boost defenses against a pest that makes their leaves shrivel up and die.

Flu season has begun. Get tips from the experts about how to best avoid getting sick or infecting others.

In animal tests, a new vaccine offered the strongest type of immunity against genital herpes.

A new needle-free flu vaccine patch boosts the immune system much like a traditional shot without any negative side effects, a study with mice shows.

Antibiotics may reduce the effectiveness of the flu vaccine, research finds. Why? Your gut bacteria.

"Overall, the MMR vaccine has been great," but new research uncovers a lack of immunity to mumps among people who probably think they're protected.

Researchers have created and tested a vaccine that can protect against a deadly superbug form of Klebsiella pneumoniae.