Can humans be infected with H9N2?

Can humans catch H9N2?

Yes, humans can be infected with H9N2, although it is considered a low-risk avian influenza virus for people. It mainly infects birds, especially poultry such as chickens and ducks.

Most human cases have been linked to close contact with infected birds or contaminated environments, rather than spread from person to person. In the UK, the risk to the general public is thought to be low.

What symptoms can it cause?

When H9N2 infects people, symptoms are usually mild and can look like other flu-like illnesses. Common signs include fever, cough, sore throat, runny nose, and tiredness.

Some people may also have headache or muscle aches. In many reported cases, illness has been mild, but any flu-like symptoms after bird exposure should be taken seriously.

How do people become infected?

People are most likely to catch H9N2 through direct or close contact with infected poultry or surfaces contaminated with bird droppings or secretions. This can happen in markets, farms, or home settings where birds are kept.

The virus may enter the body through the eyes, nose, or mouth, especially if hands touch contaminated surfaces and then touch the face. Proper hygiene and avoiding sick birds are important precautions.

Is H9N2 spread between people?

Person-to-person spread of H9N2 appears to be rare. Most known infections have been tied to exposure to birds, not household transmission.

Scientists continue to monitor avian influenza viruses because they can change over time. At present, H9N2 has not shown efficient human-to-human spread.

What is the risk in the UK?

For most people in the UK, the risk remains very low. H9N2 is not a common infection in humans here, and cases are uncommon overall.

People who work with poultry, birds, or live animal settings may have a higher exposure risk. Those in these settings should follow workplace guidance and report any illness promptly.

When should you seek medical advice?

If you develop flu-like symptoms after contact with birds, it is sensible to contact a GP, NHS 111, or occupational health if relevant. Mention any recent exposure to poultry, wild birds, or bird markets.

Early advice is especially important if you have underlying health conditions, are pregnant, or symptoms are worsening. Public health teams may advise on testing and monitoring if there is a suspected exposure.

How can infection be prevented?

Good hand hygiene is one of the simplest and most effective steps. Wash hands thoroughly after handling birds, visiting farms, or touching potentially contaminated surfaces.

Avoid touching sick or dead birds, and follow advice from animal and public health authorities during bird flu outbreaks. If you keep poultry, use protective clothing and clean equipment properly.