Fentanyl does not need much room to kill. A dose the size of a few grains of salt can slow breathing until it stops. The drug ...

Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

As flu cases are surging across the United States, here's what to know about whether or not you can still get the vaccine.

Kids are back in school and that means flu season is right around the corner - but now, families have the option to give themselves a flu vaccine at home. The vaccine is a nasal spray. The FDA ...

West Coast states are teaming up to issue their own vaccine guidelines in the face of rapid changes at the Centers for Disease Control and Prevention and the Food and Drug Administration. The federal ...

A vaccine in development would be the first proactive treatment for overdose and fentanyl addiction, if approved. A vaccine ...

Vaccine safety monitoring in the US is a multilayered process that combines passive and active functions, as well as expert analyses of specific safety questions. Side effects are passively reported ...

Fentanyl overdoses can happen in minutes, and the usual tools respond after the damage is already underway. A proposed vaccine tries a different approach: keep fentanyl tied up in the bloodstream so ...

A drastic shift in national policy recommends that only people 65 and older and others with certain health risks should get annual covid-19 vaccines, but at least one vaccine expert says the guidance ...

Some countries without school vaccination requirements have vaccination rates similar to the United States, where vaccines are generally required to attend school. Research shows an association ...