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No vaccinations are necessary for travel to Canada. The West Nile virus, spread by mosquitoes breeding in stagnant water, poses a threat during summer months in rural areas, so insect-repellent measures are advised for those visiting the countryside particularly in Saskatchewan, Alberta, Ontario, Manitoba, and Quebec. Rabies is a problem and can be spread by a bite from small animals such as racoons and bats. Medical care is excellent, but expensive, so medical insurance is advised.

View information on diseases: Rabies

Rabies

Cause: The rabies virus, a rhabdovirus of the genus Lyssavirus. Transmission: Rabies is a zoonotic disease affecting a wide range of domestic and wild animals, including bats. Infection of humans usually occurs through the bite of an infected animal. The virus is present in the saliva. Any other contact involving penetration of the skin occurring in an area where rabies is present should be treated with caution. In developing countries transmission is usually from dogs. Person-to-person transmission has not been documented. Nature of the disease: An acute viral encephalomyelitis, which is almost invariably fatal. The initial signs include a sense of apprehension, headache, fever, malaise and sensory changes around the site of the animal bite. Excitability, hallucinations and aerophobia are common, followed in some cases by fear of water (hydrophobia) due to spasms of the swallowing muscles, progressing to delirium, convulsions and death a few days after onset. A less common form, paralytic rabies, is characterized by loss of sensation, weakness, pain and paralysis. Geographical distribution: Rabies is present in animals in many countries worldwide. Most cases of human infection occur in developing countries. Risk for travellers: In rabies-endemic areas, travellers may be at risk if there is contact with both wild and domestic animals, including dogs and cats. Prophylaxis (protective treatment): Vaccination for travellers with a foreseeable significant risk of exposure to rabies or travelling to a hyperendemic area where modern rabies vaccine may not be available. Precautions: Avoid contact with wild animals and stray domestic animals, particularly dogs and cats, in rabies-endemic areas. If bitten by an animal that is potentially infected with rabies, or after other suspect contact, immediately clean the wound thoroughly with disinfectant or with soap or detergent and water. Medical assistance should be sought immediately. The vaccination status of the animal involved should not be a criterion for withholding post-exposure treatment, unless the vaccination has been thoroughly documented and vaccine of known potency has been used. In the case of domestic animals, the suspect animal should be kept under observation for a period of 10 days. Rabies post-exposure treatment: In a rabies-endemic area, the circumstances of an animal bite, other contact with the animal, and the animal's behaviour and appearance may suggest that it is rabid. In such situations, medical advice should be obtained immediately. Post-exposure treatment to prevent the establishment of rabies infection involves first-aid treatment of the wound followed by administration of rabies vaccine and antirabies immunoglobulin in the case of a bite or exchange of saliva. The administration of vaccine, and immunoglobulin if required, must be carried out, or directly supervised, by a physician. Source: WHO.

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