A new study has found that certain bacteria living in the nose may influence how likely someone is to get a COVID-19 infection. The research reveals that certain types of nasal bacteria can affect the ...

A trial found the allergy spray azelastine lowered COVID-19 infection risk. Users tested positive less often and later than those on placebo. Experts say larger studies are needed to confirm the ...

Add Yahoo as a preferred source to see more of our stories on Google. Everyday allergy spray shows promise against COVID-19 and colds in randomized trial. (CREDIT: Shutterstock) An everyday hay fever ...

People who have had COVID-19 are at increased risk of developing certain inflammatory diseases of the airways, such as asthma, hay fever and chronic sinusitis. However, vaccination against the ...

A new clinical trial found azelastine cut COVID-19 infections by 70%, hinting at a cheap, accessible way to add protection alongside vaccines. Let’s be honest: when it comes to COVID-19 prevention, ...

It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.

Researchers discover that COVID-19 uniquely causes brain inflammation and disrupts serotonin/dopamine pathways, explaining ...

Medically reviewed by Kate Colby, MPH Common types of colds include rhinovirus, coronaviruses, and human parainfluenza ...