Version July 2025
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What is bird flu? —
Bird flu (also called "avian influenza") is a type of flu that normally happens in birds. It can spread to humans from infected birds or cows.
Many people who have gotten bird flu were around sick animals (birds or cows) before they got sick. If the virus that causes bird flu changes or "mutates," it might become possible for bird flu to be passed from 1 person to another.
There are a few different types, or "strains," of bird flu. They include "H7N9" and "H5N1." Both started in Asia, but have led to outbreaks in different parts of the world. New strains continue to emerge. Since 2021, H5N1 virus infection has been found in animals in many parts of the world.
What are the most common symptoms of bird flu? —
So far, all strains tend to cause:
●Fever (temperature higher than 100°F, or 37.8°C)
●Cough
●Trouble breathing
Other symptoms might include:
●Diarrhea
●Headache or body aches
●Feeling confused
●Sore throat
●Runny nose
●Itchy or red eyes
How dangerous is bird flu? —
Since 2021, many human cases of bird flu have been mild. Some have not caused symptoms at all. But there have also been reports of severe illness.
How can I protect myself from bird flu? —
In general, you should:
●Wash your hands often with soap and water, or use alcohol hand rubs.
●Stay away from sick people and sick animals.
●Stay away from chickens and other birds in countries where there are outbreaks of bird flu. This includes markets that sell live birds.
●Pay attention to food safety. Avoid milk and other animal products that are raw or unpasteurized. Make sure meat and eggs are cooked fully.
What should I do if I get symptoms of bird flu? —
Call your doctor of nurse right away if you have flu symptoms and have been around sick or dead birds or traveled to an area that has had cases of bird flu. Do not leave your house unless your doctor or nurse tells you to go to a clinic or hospital.
It is especially important to call your doctor or nurse if you:
●Have trouble breathing, or are short of breath
●Feel pain or pressure in your chest or belly
●Get suddenly dizzy
●Feel confused
●Have severe vomiting
While you are at home, rest and drink plenty of fluids. You can also take acetaminophen (sample brand name: Tylenol) to relieve fever and aches.
Do not give aspirin or medicines that contain aspirin to children younger than 18. In children, aspirin can cause a serious problem called Reye syndrome.
Take your child to the doctor if they:
●Start breathing fast, or having trouble breathing
●Start to turn blue or purple
●Are not drinking enough fluids
●Will not wake up, or don't react to you
●Are so fussy they do not want to be held
●Get better from the flu, but then get sick again with a fever or cough
●Have a fever with a rash
If you go to a walk-in clinic or a hospital because you think you have bird flu, tell someone right away why you are there. The staff will ask you to wear a mask or to wait somewhere where you are less likely to spread the infection.
How is bird flu treated? —
People with bird flu usually get "antiviral medicines." These can help people avoid some of the problems caused by bird flu. Antibiotics do not work on the flu.
What if I am pregnant? —
Any kind of flu can be very dangerous for pregnant people. If you are pregnant, get vaccinated against seasonal flu. You should also avoid taking care of anyone who has the flu.
If you are pregnant, call your doctor or nurse right away if:
●You might have been near someone with the flu.
●You think you might be getting the flu. In pregnant people, symptoms of the flu can get worse very quickly. The flu can even cause trouble breathing or lead to death of the pregnant person or their baby. That is why it is so important to talk to doctor or nurse as soon as you notice any flu symptoms.
Where can I go to learn more? —
You can find more information about bird flu from the US Centers for Disease Control and Prevention ("CDC") website: www.cdc.gov/bird-flu.
Patient education: Flu (The Basics)
Patient education: Avoiding infections in pregnancy (The Basics)
Patient education: Influenza symptoms and treatment (Beyond the Basics)
Patient education: Influenza prevention (Beyond the Basics)
Patient education: Avoiding infections in pregnancy (Beyond the Basics)
