Your baby and the flu


The flu is an easily spread disease. Children under age 2 have a higher risk of developing complications if they get the flu.

The information in this article has been put together to help you protect children under age 2 from the flu. This is not a substitute for medical advice from your doctor. If you think your baby may have the flu, you should contact a health care provider immediately.

Alternative Names

Babies and the flu; Your infant and the flu; Your toddler and the flu



The flu is an infection of the nose, throat, and (sometimes) lungs. If your baby shows any of the following signs, you should call your pediatrician:

  • Acting tired and cranky much of the time and not feeding well
  • Cough
  • Diarrhea and vomiting
  • Has a fever or feels feverish (if no thermometer available)
  • Runny nose


Children younger than 2 years old will usually need to be treated with medicine that fights off the flu virus. This is called antiviral medicine. Such medicine works best when started as soon as possible after symptoms begin, and preferably within 48 hours.

Oseltamivir (Tamiflu) in liquid form will likely be used. Although this drug is not approved for use in children younger than 1 year of age, serious side effects are quite rare. Therefore, your doctor may recommend it in all babies. Doctors and parents must weigh the risk of side effects against the possible complications of the flu.

Acetaminophen (Tylenol) and ibuprofen (Advil, Motrin) help lower fever in children. Sometimes doctors tell you to use both types of medicine.

Always check with your doctor or nurse before giving any cold medicines to your infant or toddler.


All infants 6 months or older should receive the vaccine, even if they have had a flu-like illness. The flu vaccine is not approved for children under 6 months old.

Your child will need a second flu vaccine around 4 weeks after receiving the vaccine for the first time.

There are two types of flu vaccine. One is given as a shot, and the other is sprayed into your child's nose.

  • The flu shot contains killed (inactive) viruses. It is not possible to get the flu from this type of vaccine. The flu shot is approved for people age 6 months and older.
  • A nasal spray-type flu vaccine uses a live, weakened virus instead of a dead one like the flu shot. It is approved for healthy children over 2 years.

Anyone who lives or has close contact with a child younger than 6 months old should have a flu shot also.


You or your baby can NOT get the flu from either vaccine. However, some children do get a low-grade fever for a day or two after the shot. If more severe symptoms develop or they last for more than 2 days, you should call your doctor or nurse.

Some parents are hesitant to have their young child receive a vaccine, because they are afraid it could hurt their baby. It is important to think about the risks of flu complications. For example:

Children under 2 years of age are more likely to get a severe case of the flu. This does not mean that your child will always get a severe infection. But it is hard to predict because children who become more ill with flu often have mild disease at first. They may become sick very fast.

A small amount of mercury (called thimerosal) is a common preservative in multidose vaccines. Despite concerns, thimerosal-containing vaccines have NOT been shown to cause autism, ADHD, or any other medical problems.

However, all of the routine vaccines are also available without added thimerosal. Ask your doctor if they offer this type of vaccine.


Anyone who has flu symptoms should not care for a newborn or infant, including feeding. At the very least, caretakers with symptoms should use face masks when caring for a child, and use strict handwashing techniques.

Everyone who comes in close contact with your baby should do the following:

  • Cover your nose and mouth with a tissue when you cough or sneeze. Throw the tissue away after using it.
  • Wash your hands often with soap and water for 15 - 20 seconds, especially after you cough or sneeze. You may also use alcohol-based hand cleaners.

If your baby is fewer than 6 months old and has close contact with someone with the flu, inform your doctor or nurse.


If a mother is not ill with the flu, breastfeeding is encouraged.

If you are sick, you may need to express your milk for use in bottle feedings given by a healthy person. It’s unlikely a newborn can catch flu from drinking your breast milk when you are sick. Breast milk is considered safe if you are taking antivirals.


Talk to your child's doctor or go to the emergency room if:

  • Your child does not act alert or more comfortable when their fever goes down
  • Fever and flu symptoms come back after they had gone away
  • There are no tears when they're crying
  • Their diapers are not wet, or they have not urinated for the last 8 hours

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Fiore AE, Fry A, Shay D, et al; Centers for Disease Control and Prevention (CDC). Antiviral agents for the treatment and chemoprophylaxis of influenza --- recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR Recomm Rep. 2011;60:1-24.

Review Date:9/21/2011

Reviewed by:Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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