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Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Some people, such as older people, young children, and people with certain health conditions, are at higher risk of serious flu complications. There are two main types of influenza (flu) viruses: Types A and B. The influenza A and B viruses that routinely spread in people (human influenza viruses) are responsible for seasonal flu epidemics each year. 

Annual vaccine clinic

The annual Flu Vaccine Clinic will be Wednesday, Oct. 2, 2024, in the Student Union Ballroom. The vaccine is free to students and an insurance claim will be filed for faculty and staff. You may complete the consent form and bring it with you, or fill it out upon arrival. If you have questions about the vaccine, you may read over the Vaccine Information Statement provided by the CDC. If you aren't able to make it to the October 2 clinic, you can schedule an appointment at the UHS clinic through your Patient Portal or by calling 405-744-7665.

Flu symptoms

Influenza (flu) can cause mild to severe illness, and at times can lead to death. Flu is different from a cold. Flu usually comes on suddenly. People who have flu often feel some or all of these symptoms:

  • fever* or feeling feverish/chills
  • cough
  • sore throat
  • runny or stuffy nose
  • muscle or body aches
  • headaches
  • fatigue (tiredness)
  • some people may have vomiting and diarrhea, though this is more common in children than adults.

*It’s important to note that not everyone with flu will have a fever.

For more information visit, Flu and COVID-19 Symptoms.


How flu spreads

Most experts believe that flu viruses spread mainly by tiny droplets made when people with flu cough, sneeze or talk. These droplets can land in the mouths or noses of people who are nearby. Less often, a person might get flu by touching a surface or object that has flu virus on it and then touching their own mouth, nose or possibly their eyes.

Flu prevention

CDC recommends a yearly flu vaccine as the first and most important step in protecting against flu viruses. Visit the CDC to learn more ways to help prevent the flu


To learn more about flu, visit the CDC flu page

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