Pet Factsheets

Cat flu

Cat 'flu' is very common in unvaccinated cats and is very easily spread from cat to cat. It is rarely fatal, except in young kittens, but can be a real problem because the symptoms may be very difficult to clear up. Prevention is far better than cure - so to protect your cat make sure they are fully protected by regular vaccinations.

What is cat 'flu'?

Cat 'flu' is usually caused by infection with a combination of one or more viruses (feline herpesvirus and feline calicivirus) and some bacteria. If one of the viruses gets hold then your cat's immune system may be so busy fighting it that other bugs (particularly bacteria) will also join in the attack.

How is the disease spread?

Rather like human 'flu', cat 'flu' is spread by droplets of moisture containing the virus, passing from cat to cat - through sneezing, direct contact or shared food bowls. Infected cats spread virus in the saliva and nasal discharges (snot). The incubation period (the time for which a cat is infected and carries the disease before the symptoms develop) is up to 3 weeks. This means that it is quite possible for your cat to pick up the disease from another cat which seems healthy. People can spread the virus from cat to cat when handling them.

How do I know if my cat has 'flu'?

The signs of cat 'flu' are very obvious and unlikely to be mistaken for anything else. In fact cat 'flu' is often very similar to human 'flu' starting with a high fever which may make your cat feel miserable and off her food, followed by the sneezing, coughing and sore eyes. Signs usually start to get better after about 7 days and, in most cases, your cat should be much better in about 2-3 weeks. In some cats the disease can cause ulcers in the mouth making eating difficult.

Can I catch 'flu' from my cat?

No - the viruses that cause cat 'flu' are quite different from those causing 'flu' in humans. Your cat cannot catch the disease from you and you are not at risk of catching it from your cat.

Can cat 'flu' be treated?

There is no treatment for 'flu' in cats. Your cat will have to fight off the infection, and fortunately most otherwise healthy cats will do this within a few weeks. But cats, just like people, feel pretty miserable when they have the 'flu' and plenty of nursing care is needed to help them get over it. Make sure your cat has somewhere comfortable and warm to lay and be sure they get plenty of water or milk to drink. Although your cat may not want to eat for the first few days, you should try to tempt them to eat by offering tasty warm food to keep their strength up. You should always have your cat checked by your veterinarian, and antibiotics may be prescribed to treat bacterial infections. If your cat is very congested try putting them in a warm steamy environment (like the bathroom with a hot shower running) to ease their breathing. Always keep in close contact with your veterinarian and let them know immediately if your cat appears to take a turn for the worse. If you have other cats living in your house take particular care to keep them away from the sick cat and always wash your hands after handling them. However, because your cat will have been infectious before the symptoms developed, it is likely that your other cats will already have been exposed to the disease and may develop symptoms.

Will my cat get better?

Most fit young cats will recover from 'flu' after a few weeks - although in some cats that do get over the initial illness the problem never really goes away. These animals may be left with persistent problems such as runny noses. Sometimes these cats are on almost permanent medication to control their symptoms. The disease can be much more serious in young kittens, older cats and cats with other diseases, eg FeLV or FIV - these patients may need to be admitted to hospital for special treatment but, even so, may not survive.

How can I stop my cat getting 'flu'?

The sensible precaution is to have your cat vaccinated to stop her getting 'flu' in the first place. The 'flu' vaccine that is given routinely as part of the annual vaccination program will protect your cat against the common agents that cause serious disease. Vaccination does not always prevent infection, but it usually stops severe disease developing.

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