A cold – also called infectious rhinitis – is a very common viral infection of the nose and throat. Doctors call it a "self-limiting" condition, which means that it only lasts so long and goes away on its own.
In most people, colds are relatively harmless, but th...
Cold sores, also known as fever blisters, are caused by a virus called herpes simplex. They usually appear around the mouth and on the lips. They are highly contagious but not dangerous.
About 90% of the population have been exposed to the virus by age 50. On average, people who get cold sores ...
Although it's considered a vaccine-preventable disease, whooping cough (pertussis) certainly hasn't been eliminated as a public health problem. The incidence of whooping cough has decreased by more than 90% over the last 70 years, but there are still outbreaks. While most other diseases that ar...
The flu is a respiratory (i.e., nose, throat, and lung) infection that can be caused by influenza viruses. Many people use the word "flu" when they actually have a cold. Although the common cold is also caused by viruses, the flu and common cold differ in several ways.
In North Americ...
Bronchitis is an inflammation of the airways between the windpipe and the lungs (bronchial tubes). The lining of these tubes produces large amounts of mucus, triggering a lingering cough. About 1 in 20 people in North America suffers from chronic bronchitis. Women are more at risk than men.
Br...
During cold and flu season, you may be unsure about when you should call in sick from work. Here are some signs that you'd be better off resting and recuperating at home.
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