Commonly referred to as “the flu,” influenza usually appears in a seasonal cycle. Due to its highly contagious nature, it’s not unusual for flu to spread through families, schools, offices and care facilities.



The flu is caused by an airborne virus that affects the nose, throat and lungs. Symptoms develop within four days of initial exposure, and infected individuals can spread the disease for up to ten days after becoming symptomatic. Young children, the elderly, pregnant women, the extremely obese and people with chronic illnesses or impaired immunity are at a higher risk for contracting the flu.

Symptoms and Diagnosis

Symptoms of the flu are usually worst during the first three to four days of illness and may include:

  • Fever between 100 and 106 degrees
  • Muscle ache
  • Chills or sweating
  • Headache
  • Dry cough
  • Sore throat
  • Congestion
  • Tiredness or fatigue
  • Loss of appetite

From the appearance of the first flu symptom, the virus can take one to two weeks to run its course. To determine if you have the flu, your doctor will do a symptom survey and a physical exam. He or she may also do a blood test or fluid culture to find out whether you have the “type A” or “type B” flu virus.

Flu Treatment

In most cases, the best treatment for flu is to get plenty of rest, ensure adequate fluid intake and use over-the-counter pain medications or cough suppressants to ease symptoms. If a high fever is making you uncomfortable, try taking a lukewarm sponge bath or applying a cool compress to your forehead.

When caught in the early stages, the duration of the flu may be shortened by taking prescription antiviral medications. High-risk individuals and those who work around children or the elderly should consider getting a seasonal flu shot.


Seek immediate medical care if you experience:

  • Wheezing or trouble breathing
  • Severe headache or neck stiffness
  • Dizziness
  • Persistent vomiting
  • A very high fever or fever that lasts more than three days
  • New or worsening pain

An urgent care center can provide fast treatment if you’re unable to see your doctor.

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