New BIDMC study on COVID-19 reveals persistent immune activation in patients who developed long COVID, which could help identify new paths to treatment.

The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC San Francisco that offers ...

A doctor's viral remark linking Covid virus and vaccine spike protein to a rise in rare cancers has triggered concern. But ...

SAN FRANCISCO (KRON) — Did you catch COVID-19 last year? The virus may still be in your body, two new studies found. The studies conducted by University of California San Francisco infectious disease ...

Early in the beginning of the COVID-19 pandemic, scientists predicted the coronavirus would mutate slowly. They were wrong. Hundreds of thousands of viral mutations and multiple seasonal waves later, ...

A new study identifies a mechanism for how COVID vaccines may, in infrequent cases, drive heart inflammation, a condition ...

For millions suffering from long COVID, their persistent breathlessness, brain fog and fatigue remain a maddening mystery, ...

SARS‑CoV‑2, the virus that causes COVID-19, continues to mutate, with some newer strains becoming less responsive to current ...

Scientists are uncovering a new possibility behind long COVID’s stubborn symptoms: hidden infections that awaken or emerge alongside SARS-CoV-2. Evidence is mounting that viruses like Epstein-Barr and ...

The virus that caused the COVID-19 pandemic is still circulating, but some Alaskans seeking to be vaccinated against the disease may have to wait for that service. State health officials continue to ...