COVID-19 vaccines lower the risk of getting sick, seriously ill or dying from the disease. But how do the different types of COVID-19 vaccines work? Each COVID-19 vaccine causes the immune system to ...

What is an RNA vaccine? RNA vaccines, or messenger RNA (mRNA) vaccines, are a relatively new type of vaccine that delivers mRNA molecules to human cells, instructing them to produce specific antigens.

Patients with advanced lung or skin cancer who received an mRNA COVID vaccine within 100 days of starting immunotherapy saw a notable boost in survival time. New research has linked the COVID-19 mRNA ...

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 ...

Vaccines have traditionally worked by teaching the immune system to recognize a specific virus or bacterium—in effect, showing it a wanted poster for a single suspect. But what if one vaccine could ...

Vaccinations used to seem simple. Your doctor would tell you which to get, and you’d roll up your sleeve at the office or a nearby pharmacy. Now we’re seeing changing recommendations, and some people ...

COVID-19 vaccine boosters not only protect against SARS-CoV-2—the virus behind the most recent pandemic—but may also help ...