Researchers have found strong evidence of an association between exposure to fine particulate air pollution from 2020 wildfires in the U.S. and increased risk of COVID-19 cases and deaths in three western states, for up to four weeks after the exposure.

Immunologist Yonatan Grad explains what has been learned from COVID-19 and how to apply the lessons moving forward.

A new study found that COVID-19 messages tailored to Black audiences and presented by physicians of color did not enhance the effectiveness for minority participants.

Citing COVID threat, researchers urge policy changes to ease prison crowding. New study recommends early release for inmates at low risk of reoffending.

Researchers have now created a simple, inexpensive diagnostic test that allows users to test themselves for multiple variants of the SARS-CoV-2 virus at home, using just a sample of their saliva.

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.

Harvard Associate Professor of Epidemiology William Hanage provides tips on how to deal with the Delta variant of COVID-19.

Conversations with Harvard experts shed light on the rise of Delta, an unwelcome twist in transmission, the power of vaccination, and more.

Coronavirus ultimately not over, says Harvard Chan School's William Hanage.

A Harvard Chan School psychologist counseled awareness and flexibility as people return to work, school, or other pre-pandemic activities.