Spring can see frequent COVID cases, since the effectiveness of fall vaccines can start to wane, and people tend to travel more as soon as the warm weather returns, which can increase exposure to ...

A medical expert explains whether people who have already recovered from COVID-19 should still get vaccinated. Learn how ...

Research reveals a sharp decline in both the effectiveness and duration of protection from prior infection post-Omicron, underscoring the need for updated vaccines to sustain immunity Study: ...

A team led by researchers at the University of Cologne has identified a protein called ANKIB1 that acts as a volume dial for the body’s frontline immune defenses, controlling how strongly cells ...

Natural immunity comes from being exposed to a microbe that causes a disease. Vaccination-mediated immunity comes from being exposed to a vaccine that is similar to but not the same as the microbe. If ...

In a new study, University of Georgia researchers have found that natural immunity from previous flu infections has a significant impact on how well future influenza vaccinations work. That may mean ...