Researchers have come up with a new way to identify more infectious variants of viruses or bacteria that start spreading in humans - including those causing

Black Americans were disproportionately affected by COVID-19 infections, illness and death during the pandemic. But the long-term toll of long COVID among this group is still largely overlooked.

Cold and flu viruses often circulate more in the fall and winter, but there are some time-tested strategies for avoiding them, such as vaccines, handwashing and staying active.

"...receiving your booster shot at the right time can make a significant difference in your protection against infection."

Long COVID-19 is making it harder for people to pay their bills, buy groceries, and keep their utilities on, researchers report.

Rather than winging it when an unusual health event crops up, health officials take a systematic approach. The goal is to quickly figure out what’s going on and squash any outbreak before it spreads.

New combination tests for flu and COVID-19 are here. An expert explains everything you need to know about the new tests.

A fever and a nasty cough can be symptoms of a range of respiratory illnesses. An antigen test that narrows down the culprits can speed up diagnosis and recovery.

Damage to the brainstem – the brain’s ‘control centre’ – is behind long-lasting physical and psychiatric effects of severe Covid-19 infection, a study suggests.

New research in mice finds that having recovered from COVID had a protective effect against the worst effects of the flu.