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Advice for Veterinarians and Swine Producers - H1N1 Flu Virus

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What is swine influenza?

Swine influenza is a contagious respiratory disease of pigs. The disease is commonly seen in North and South America, Asia and Europe. Illness is caused by Type A Influenza viruses, which also affect a range of other animals, as well as humans.

Influenza viruses are commonly detected in pigs, which can become infected by humans, birds or other pigs. The transfer of influenza from pigs to humans is rare and usually involves close contact with sick animals. However, the CFIA is asking veterinarians and producers to increase their biosecurity measures to limit any risks to human or animal health.

The CFIA is working with its provincial and territorial counterparts to monitor swine herds and to encourage producers to maintain strict disease prevention measures.

What are the symptoms in pigs?

Signs of swine influenza include the following:

How can pigs be protected?

The following actions can potentially prevent swine influenza:

What precautions should producers take to limit the risk of introducing and spreading disease?

Traffic control:



Herd health management:

Program maintenance:

What precautions should veterinarians take when investigating respiratory illnesses in swine?

The CFIA recommends that veterinarians:

Until more is known about how this illness affects swine, if swine influenza is suspected – do not travel to another swine farm for 48 hours.

For more detailed information on biosecurity measures recommended for disease investigation farm visits please contact your local CFIA office.

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