Observations by community scientists reveal how the absence of human activity in cities made room for birds.

Despite knowing the risks of COVID-19, breakthrough infections, and long COVID, US adults are less and less likely to take precautions, a survey finds.

Children's noses are better at inhibiting SARS-CoV-2 infections than adult noses. But it's a different story when the Omicron variant is involved.

A new COVID-19 test detects and identifies specific SARS-CoV-2 variants with 100% accuracy, researchers say.

New research is "a step forward in understanding viral infection pathways and paves the way for research toward better treatments in the future."

A new patch "has the potential to offer a new—and more effective—weapon in our arsenal, at a time where new variants are mutating at a rapid rate."

Amid a steady rise in monkeypox cases worldwide, an expert explains how the virus is transmitted, who is at risk, and how vaccines can control the spread.

Researchers say two new studies virtually eliminate alternative scenarios that have been suggested as origins of the pandemic.

Researchers have shown that they can produce antibodies specific for the COVID-19 virus spike protein from eggs by immunizing hens.

The death of a spouse can be devastating at any time, but a new study finds losing a spouse due to COVID-19 can be especially hard on mental health.