Most bacterial and viral infections are contagious and spread fast, especially during the rainy season—most people are ...

Local health officials announced that a person infected with the measles traveled through Phoenix Sky Harbor International ...

While the symptoms of Covid and the common cold are broadly similar, there are some key differences between them ...

Researchers at Harvard’s Wyss Institute for Biologically Inspired Engineering have developed a compound that could work as a ...

Cranking up the AC also makes the air less humid, reducing the dampness that contributes to bacterial growth, mold, and dust ...

Here’s what causes colds to spread so easily, how long they are usually contagious and how they’re most commonly treated.

The state’s public health department urges anyone who may have been exposed or who is experiencing symptoms to contact their ...

The flu virus is lingering in Arizona and the season has been vicious. Pediatric flu deaths reached the highest level in ...

When your mouth becomes chronically dry, this sophisticated defense system breaks down. The protective mucous layer thins out, antimicrobial activity decreases, and your entire respiratory tract ...

Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment, according to Vatican authorities Monday. On Tuesday, he underwent a chest CT scan ...

In light of Pope Francis’ latest diagnosis, Dr. Leana Wen explains why older adults are especially at risk for serious disease due to respiratory infections.