Influenza, or the flu, is a contagious respiratory virus. It can be a severe illness that affects the nose, throat and sometimes lungs. Symptoms of influenza are sore throat, cough, congestion, ...

If you test positive for COVID-19, learn that a loved one has been infected or find out you’ve been exposed to someone with the virus, you undoubtedly have lots of questions. The one that probably ...

The period of most contagiousness for COVID is generally up to 10 days after the onset of symptoms, but it can vary depending on severity of symptoms or differing immune systems, per the National ...

With each new COVID-19 variant, the interval between exposure and symptom development appeared to shorten, according to a study published Aug. 22 in JAMA Network Open. COVID-19 is known to have a ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. ’Tis the season for sneezes, coughs and sniffles. If a cold or the flu hits your household, it’s best to stay away from other ...

NEW YORK -- As the highly transmissible omicron and delta coronavirus variants continue to sweep across the United States, health officials warn that more people are expected to get infected -- even ...