Health professionals have been quick to point out that many people do not get sick from a single dose of the virus, but rather from a cluster of symptoms.

“There are a lot of people who think that because the number of symptoms is low that you’re just not getting it.

But it’s actually not that simple,” Dr. David Gittins, director of the National Center for Chronic Disease Prevention and Health Promotion at the University of Pennsylvania, told ABC News.

He said the number one way to look at the situation is to look for a pattern.

Gittins said people who are not sick can get sick when they are exposed to the same thing in the same area, such as eating at a restaurant that is frequented by people who have been sick, or eating at the same location over time.

The virus is transmitted by contact with the saliva of an infected person.

It is most commonly spread through coughing, sneezing or sneezes.

Symptoms can be mild or severe, and can include a runny nose, sore throat, cough, sore eyes, fever, headache and body aches.

It is a contagious illness, but the only way to prevent it is to prevent getting sick.

If you do become sick, there are a number of ways you can protect yourself: Wash your hands often, and wash them thoroughly.

Wash the inside of your mouth regularly, as it is much more likely to harbor bacteria.

Make sure that your hands are clean, dry and free of any other infections, such in the respiratory tract. 

Avoid contact with people with the same infection.

The virus is highly contagious, and it is best to keep your close friends and family members close, and away from people who seem to be infected, even if they are not.

The CDC recommends that anyone who has been exposed to this virus be tested at least once a year, even for a milder form of the infection.

A person who develops symptoms from the virus should be seen by a doctor immediately.