Experts say fast-spreading, less severe profile of Omicron is emerging as cases drop in South Africa but warn of challenging weeks ahead.

Dan Barouch, Harvard Medical School professor and head of Beth Israel Deaconess’ Center for Virology and Vaccine Research, was awarded Harvard’s George Ledlie Prize for work that culminated in one of three vaccines against COVID-19 approved for use in the U.S.

Single-shot COVID-19 vaccine generates robust immune responses against variants.

With new coronavirus variants on the U.S. pandemic scene, experts say brace yourself for another surge — and mask up.

Harvard Medical School Professor Dan Barouch said the “complicated pandemic” means more work lies ahead.

BIDMC-led research team reports vaccine protection against severe COVID-19-related pneumonia and death.

Vaccines that might protect against COVID-19 have entered phase 3 trials — the last step before regular approval in humans — in record time, but the virus has moved faster, experts say.

Team at Harvard plans to launch a clinical trial for a potential COVID-19 vaccine in the fall.