How do vaccines work? Here's what medical experts want you to know about safety and efficacy.

Vaccines have traditionally worked by teaching the immune system to recognize a specific virus or bacterium—in effect, ...

LEXINGTON, Ky. (WKYT) - For today’s Good Question, Michelle asks: How long does it take for a vaccination to become effective once given? That can vary based on the type of vaccines and whether or not ...

Herd immunity occurs when enough people become immune to a disease, either through vaccination or previous infection. This can reduce the likelihood of it spreading and increase protection for ...

The adjuvanted respiratory syncytial virus (RSV) vaccine RSVPreF3 was immunogenic in lung transplant (LT) and allogeneic hematopoietic cell transplant (alloHCT) recipients. No vaccine-associated ...

A rare clotting disorder puzzled doctors during the COVID vaccine rollout. New research reveals the unlikely chain of events ...

A vaccine combined with Keytruda is associated with a 49% reduction in the risk of recurrence or death. Among patients with advanced melanoma, long-term data have shown that a personalized mRNA cancer ...

Hepatitis B is a potentially fatal liver disease. It spreads through contact with bodily fluids, and certain groups including health care workers and IV drug users are at higher risk. Anyone can be ...

DEAR DR. ROACH: My daughter was recently visiting and tested positive for COVID. Since my last COVID vaccine was eight months ago, I searched for how much protection I still had and understood the ...