Influenza
Seasonal Influenza 

Woman sneezing into a tissue

Seasonal Flu Facts:

  • The flu is an illness caused by influenza viruses. Because the flu is a viral infection, antibiotics are not an effective form of treatment. Antibiotics are, however, useful in treating secondary bacterial infections that can result from or occur with the flu.
  • It is possible for people to catch the flu by touching objects (telephones, eating utensils, doorknobs, etc…) contaminated with flu viruses and then touching their eyes, nose or mouth.
  • Every year in the U.S., 5% to 20% of the population gets the flu and about 36,000 people die as a result of flu-related causes.
  • The flu season in the U.S. usually occurs during the winter months; however, cases can occur throughout the year.


Symptoms of Seasonal Flu

Most people who get the flu will recover in a few days to less than 2 weeks. Common flu symptoms include:

  • fever (usually high)
  • headache
  • extreme tiredness
  • dry cough
  • sore throat
  • runny or stuffy nose
  • muscle aches
  • stomach symptoms such as nausea, vomiting, and diarrhea also can occur but are more common in children than adults

The Spread of Seasonal Flu

  • The flu is primarily spread from person to person through sneezing and coughing.
  • It is possible for people to catch the flu by touching objects (telephones, eating utensils, doorknobs, etc…) contaminated with flu viruses and then touching their nose or mouth.
  • It is possible to spread the flu to others up to one day before developing symptoms and up to five days after becoming sick.

Preventing Seasonal Flu

The best way to prevent the flu is by getting a flu vaccination each year. Other ways to prevent catching and spreading the flu include:

  • Clean your hands often with soap and warm water or alcohol-based hand cleaners. Avoid touching your eyes, nose or mouth.
  • Use a tissue to cover your mouth and nose when you sneeze or cough then put used tissue in the waste basket. If a tissue is not available, then sneeze or cough into the inside of your elbow, not your hand.
  • Avoid close contact with people who are sick and keep your distance or stay home if you are sick.

Health information products (brochures, posters, etc.) on influenza are available online in the USAPHC Health Information Products eCatalog.

Influenza Guidance, Recommendations and Policies

Government Sources 

Clinical

DoD

General Information on Seasonal Influenza 

Non-Government Sources 

Sources: Center for Disease Control and Prevention (CDC); Flu.gov; World Health Organization