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Cold & Flu 101

What's the difference between a Cold and the Flu, between the Swine Flu and Bird Flu? Who's at greatest risk for the Flu? We're glad you asked. Find all this and more.

Flu At-A-Glance

Caused by: Influenza virus

Spread by: Droplets released by coughing or sneezing of people with influenza. These droplets are spread via hand contact or by touching an infected surface and then touching your nose or mouth. Symptoms appear 1 to 3 days after exposure.

  • What makes flu particularly challenging is that you can infect someone the day before your own symptoms develop, and up to five days after your symptoms appear. That means you can give the flu to someone else before you even know you are sick.

Symptoms:

Symptoms appear 1 to 3 after exposure.

  • Sudden fever (101° F or higher)
  • Cough (sometimes dry)
  • Achy muscles
  • Headache
  • Sore throat
  • Chills
  • Extreme fatigue

Lasts for: Up to 14 days, but usually less

Potential Flu Complications

It's reassuring to note that according to the CDC, most people who get the flu will recover within two weeks and medical care or an antiviral medication. However, some at-risk audiences are more likely to experience flu complications.

These complications can include:

  • Pneumonia
  • Bronchitis
  • Sinus Infection
  • Ear infection
  • Dehydration

And if you have a chronic illness -- like asthma -- flu can make their existing symptoms worse.