The Delta variant is driving a surge in US coronavirus cases and hospitalizations. Although Delta can partially evade vaccine-induced antibodies, vaccines work against it. One chart shows how well ...

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 ...

While Robert F. Kennedy Jr., President Donald Trump’s pick to lead the US Department of Health and Human Services, has backpedaled on his anti-vaccine rhetoric during his Senate confirmation hearings, ...

These vaccines are not the same as a flu vaccine. Pneumococcal vaccines protect against a type of bacteria, not a virus such as the flu. Many babies or young children now get the recommended ...

mRNA vaccines tell the body how to make a protein that produces immunity against specific microbes. In contrast, traditional vaccines use weakened or dead microbes, or pieces of them, to stimulate ...

Dear Mayo Clinic: I know COVID-19 has been around now for more than a year, but I’m still confused by the different types of vaccines, including messenger RNA and vector vaccines. Can you explain how ...