Add Yahoo as a preferred source to see more of our stories on Google. Can certain infections, such as COVID, leave you more vulnerable to getting another illness? (Getty Images) (Guido Mieth via Getty ...

Antimicrobial resistance—when bacteria and fungi defend themselves against the drugs designed to kill them—is an urgent ...

Antimicrobial resistance (AMR) poses one of the greatest threats to global public health, with excessive antibiotic use driving the emergence of ...

The immune system’s first encounter with a virus or vaccine establishes a “starting template” that shapes its response to new variants, a phenomenon often called immune imprinting. A new study shows ...

Add Yahoo as a preferred source to see more of our stories on Google. A vial of the measles, mumps and rubella vaccine is on display at the Lubbock Health Department Wednesday, Feb. 26, 2025, in ...

Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...

Since it was first detected in the U.S. in 2014, H5N1 avian influenza, commonly known as bird flu, has jumped from wild birds ...

Pregnancy is a time of significant physical and mental changes for every woman. During this time, the body's immune system ...

Having a COVID-19 infection can shore up your immunity to the virus, but can it also leave you more susceptible to getting sick with other illnesses? That's the theory laid out in a new scientific ...