Inflammation and damage to the olfactory system from shingles, COVID-19 and herpes infections may contribute to Alzheimer’s disease.

A new test that ‘fishes’ for multiple respiratory viruses at once using single strands of DNA as ‘bait’, and gives highly accurate results in under an hour,

Pinpointing the routes that the COVID-19 virus takes in and out of the nasal cavity could make possible a "morning after" spray to prevent infection.

A new blood test is 90% accurate in figuring out if an infection is bacterial or viral. It could help cut antibiotic overuse globally.

The SARS-CoV-2 spike protein can damage cell barriers that line the inside of blood vessels within organs of the body, researchers report.

Does having had COVID-19 change the body's response to other threats? Depends on your sex, researchers report.

Using a simple nasal swab to test for a single immune system molecule can detect stealthy viruses that standard tests may miss.

Using a simple nasal swab to test for a single immune system molecule can detect stealthy viruses that standard tests may miss.

Millions of people haven't fully recovered their sense of smell after COVID-19. A relentless immune assault on olfactory nerve cells may be why.

Aerosols in indoor air can vary in acidity, and the acidity determines how long viruses remain infectious in the air, research finds.