Cold air does not kill germs. Actually, cold weather can make it easier for viruses and bacteria to spread — here's why.

Flu, COVID-19, the common cold and RSV have similarities, but they differ in their severity, contagiousness and symptoms.

Though the common cold and the flu have very similar symptoms, some key differences like how high your fever is will help you ...

As winter sets in, it's important to be aware of the various illnesses that could strike and how to tell them apart.

Detection of common cold coronaviruses (ccCoVs) decreased by approximately half after the widespread SARS-CoV-2 exposure and COVID-19 vaccination, whereas detection of respiratory syncytial virus (RSV ...

As cases of COVID-19 and the common cold rise across the country, it’s understandable to want to do what you can to lower ...

Researchers say people using a common allergy nasal spray, azelastine, were 69% less likely to contract COVID-19.

Influenza is an infectious disease of the mouth, nose and upper airways caused by a flu virus. In Europe, during the 15th and 16th centuries, people believed flu epidemics were influenced by the ...

Diane Keaton's pneumonia death highlights how bacterial and viral lung infections can be life-threatening, especially for ...

As of October 2025, the predominant covid-19 strains circulating are the Omicron subvariants XFG, known as "Stratus," and NB.