What Is the Flu?
The flu is a highly contagious respiratory infection caused by influenza viruses. The influenza virus enters the body through mucus membranes in the mouth, nose or eyes.
When a person with the flu coughs or sneezes, the virus then becomes airborne and can be inhaled by anyone nearby. You can also get the flu if you have touched a contaminated surface like a work station computer keyboard, or a doorknob and then touch your nose or mouth. The risk of infection is greater in highly populated areas like schools, buses and crowded urban settings.
Who is at risk for the Flu?
In most communities, school-age children are the first age group to get the flu. They then carry the virus home and to activities, like martial arts lessons, where they interact with other kids.
Older adults, young children and people with specific health conditions are at higher risk for serious flu complications.
How do I know if it is a cold or the Flu?
The cold and flu are both respiratory illnesses, but they are caused by different types of viruses with different symptoms.
What are the types of Flu viruses?
There are 3 types of flu viruses. Type A viruses are found in many kinds of animals, including ducks, chickens, pigs and also humans. The Type B virus widely circulates in humans. Type C has been found in humans, pigs and dogs. It causes mild respiratory infections, but does not spark epidemics. Flu viruses are constantly changing.