Chicago area is witnessing a canine influenza outbreak. State animal health officials are warning people to avoid the area, especially with dogs.

Around a decade back, the influenza was identified and is considered extremely contagious. Dogs are considered to have no immunity to the disease. The condition, having an incubation period of around a week, causes a dry, hacking cough.

Animal can cough up white, foamy phlegm and could also suffer from vomiting, lethargy, a runny nose, fast breathing and lack of appetite. These symptoms can continue for up to three weeks. Though majority of animals recover, older dogs and the ones having weaker immune systems can develop pneumonia and the condition can prove dangerous.

Authorities concerned said the outbreak is limited to the Chicago area. The state has been taking measures to control the situation. It has closed all of its dog parks in order to prevent the spread of the disease.

Jessica Henry, head of the local SPCA, termed the disease 'frightening'. She shared that a dog rescue expo will be organized at Memorial Coliseum on April 18 and 19. At the event, 25 different rescue operators will be present with dogs.

Henry advised that people should make sure that their dogs do not touch noses. There is a vaccine for the disease. It requires two shots and 28 days to become effective. But then also, it is not sure that the dog is immune. And, if the dog gets illness then it will not be that severe.

The virus can travel like if people are around a dog with the disease then they could carry the virus home on their hands or clothes.