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  • Influenza, or the flu, is an upper respiratory tract infection caused by the influenza virus. The flu season usually lasts from November through April.

    Influenza is not the "stomach flu." Vomiting, nausea and diarrhea are caused by other viruses or bacteria and are rarely related to influenza.

    Symptoms of influenza

    Symptoms, which may start quickly, include:

    • fever, chills or both
    • runny or stuffy nose
    • sore throat
    • dry cough
    • headache
    • fatigue
    • body aches

    How to know your child has influenza

    Your child's health care provider will do a general exam and may test to see if the virus is in your child's nose.

    How to treat influenza


    Antibiotics will not work on viruses.

    In general, treatment for the flu includes:

    • drinking lots of fluids
    • taking acetaminophen (Tylenol®), ibuprofen (Advil®, Motrin®) or other over-the-counter medicines to treat symptoms. Follow your health care provider's or the package directions.
    • Don't give aspirin to children. It could cause Reye's syndrome .
    • Anti-viral medicine can reduce how severe the illness is. It works when prescribed by your health care provider within the first 48 hours.

    How to prevent influenza

    Make sure your child:

    • covers his mouth when he coughs or sneezes
    • gets plenty of rest
    • washes his hands well with soap and water or a waterless alcohol product after going to the bathroom, after coughing or sneezing into his hands, after handling a tissue or other items that may have the flu germs
    • have your child (older than 6 months) get an influenza vaccine each year. Ask your health care provider for details.
    • parents of infants younger than 6 months old should be vaccinated to prevent the spread of influenza to their child. Children younger than six months old can't receive the vaccine

    When to call your health care provider

    Influenza is a serious disease. Each year, children and adults die from influenza.

    Call your health care provider if your child has signs of other infection:

    Call your health care provider if your child doesn't seem to improve in three to four days as most children show signs of getting better by this time. Your child will fully recover in 7 to 10 days.

  • Source: Allina Health's Patient Education Department, Guide for the Care of Children: Ages Birth to 5 Years Old, fifth edition. To avoid awkward sentences, instead of referring to your child as "he/she" or "him/her," this guide will alternate between "he" or she" and "him" or "her."
    Reviewed by: Allina Health's Patient Education Department experts, including the Pediatric Department of Allina Health Coon Rapids Clinic
    First published: 02/01/2010
    Last reviewed: 01/01/2016