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.

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Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.

An infectious disease specialist took the time to explain what herd immunity is, how it works and when it might affect the spread of COVID-19. Dr. Frank Esper works for the Cleveland Clinic Children's ...

Mucosal surfaces, including those of the respiratory, gastrointestinal and female reproductive tracts, are continuously exposed to environmental challenges and serve as the primary entry sites for ...

A new study suggests the immune system relies on repeated rounds of mutation and competition rather than perfect selection to ...

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 ...

More and more routine vaccines are being linked to lower risks of dementia. Shots against seasonal flu, RSV, tetanus, diphtheria, and pertussis (Tdap), pneumococcal infections, hepatitis A and B, and ...

Researchers at the University of Wisconsin School of Veterinary Medicine have identified a possible way to make longer-lasting vaccines for respiratory viruses like influenza and the coronavirus that ...

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