A nine-year-old boy who wants to save his younger sister's life by donating his bone marrow will have to wait after she ...

As Covid-19 transmission ramps up in the United States, recent changes to federal vaccine guidance have left many Americans ...

COVID-19 activity is rising in much of the country. Data released Friday by federal health officials shows overall ...

As we welcome a new school year, medical experts are monitoring a new variant of COVID-19. The new strain is called NB 1.8.1 ...

A lawsuit filed Thursday alleges the Mayo Clinic violated federal law when it refused a security guard's request to be exempt ...

The CDC is tracking a summer rise in COVID-19 cases across the U.S., with Florida showing some of the steepest increases.Dr.

The new mice study builds on previous studies that found COVID-19 doubled patients' risk of dying from cancer.

Massachusetts-based Moderna said it plans to cut 10% of its global staff as part of its ongoing efforts to reduce annual ...

Pfizer and its German partner BioNTech on Friday lost their bid to overturn a ruling that their COVID-19 vaccine infringed ...

At the U.N., he took on some of the world’s most challenging health crises in troubled areas, skillfully coordinating ...

Long Covid, also known as Post-Covid Syndrome, is a new condition that is still being studied. Most people who have Covid ...