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Bird flu (avian influenza) is a serious illness that affects the lungs. Currently, this illness mainly infects birds. But if the germs that cause bird flu begin to spread easily among people, a worldwide outbreak could occur. No one knows if this will happen. But health experts are trying to get ready for such an event. This sheet answers some of the questions you may have about bird flu.
The biggest risk factor for bird flu is contact with sick birds. This is more likely to happen in parts of the world where people raise their own birds for food. Or it tends to occur in places where live birds are sold in markets.
Wild birds carry the germ (virus) that causes bird flu. They then spread the virus to farm-raised birds such as chickens, ducks, and turkeys. Most people who have had bird flu have touched an infected bird or its droppings. A few people have been infected without any known contact with an infected bird. This is rare.
There are many types (strains) of bird flu. In the U.S., it has been limited to the type that caused only mild to moderate illness. But in other parts of the world, there are strains that have caused more severe illness, including death. There have been more than 650 cases of the more serious type of bird flu in humans since 2003. These cases have mostly occurred in Asia, Africa, the Pacific, Europe, and the Near East. The CDC watches the strains of bird flu found because changes can occur in the viruses that could make them more likely to infect humans.
The symptoms of bird flu are like ordinary flu. They include fever, headache, extreme tiredness (fatigue), sore throat, cough, and muscle aches. Some people get eye infections. Pneumonia and other serious problems can also occur.
Heat kills the germs that cause bird flu. You can’t get bird flu from eating poultry or eggs that are fully cooked. But before fully cooking these foods, you can get sick from bacteria that may be present and still alive. To stay safe:
Wash your hands with soap and clean, running water for at least 20 seconds before and after handling raw chicken or eggs. Scrub under your fingernails and between your fingers.
Cook poultry until a meat thermometer registers at least 165°F (74°C) at the thickest point. Cook eggs until the whites and yolks are firm.
Use 1 cutting board just for poultry. Don’t let raw juices touch other foods.
Clean knives and cutting boards after each use with hot water and soap so they don’t contaminate other foods.
Scientists around the world are working to find a vaccine for bird flu. For now, healthcare providers often treat bird flu with antiviral medicines.
Visit the CDC website at www.cdc.gov/flu/avianflu.