Colds, flus and other respiratory illnesses are more common in winter months. See what you know about the viruses, symptoms, populations most at risk and care advice with this quiz.

How many viruses can cause a common cold?

The correct answer is C. More than 200

How did you get it? Somebody coughed or sneezed near you, or you touched a contaminated surface, like a doorknob.

What is the most common virus that can cause a cold?

The correct answer is B. Rhinovirus

Most people are contagious for about a week, starting the day before they have symptoms.

How many Americans get the flu each year?

The correct answer is D. Between 5 and 20 percent

Relieve symptoms with rest, fluids and medicines. In severe cases, antiviral medications like Tamiflu or Relenza may be prescribed.

What is the most common respiratory cause of hospital admissions for children younger than 1 year?

The correct answer is B. RSV

Older adults, people with heart and/or lung problems, and people with weakened immune systems are also at risk.

What percentage of infants get RSV by age 2?

The correct answer is A. Between 97 and 99 percent

Also, each year in the U.S., 60,000 to 120,000 older adults are hospitalized with RSV.

What percentage of adults and children are diagnosed with acute bronchitis in the U.S. each year?

The correct answer is A. About 5 percent of adults and 6 percent of children

How does it feel? Like you can’t stop coughing, probably starting as a dry cough that soon became mucus-producing.

Bronchitis is considered chronic if you have a mucus-producing cough …

The correct answer is B. at least three months per year, two years in a row

Chronic bronchitis is inflamed bronchi (the big tubes that bring air to the lungs), resulting in overproduction of mucus.

Whooping cough is on the rise because ...

The correct answer is D. All of the above

In recent years, between 10,000 and 40,000 cases of whooping cough have been reported annually nationwide.

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