A farm worker has infected a herd of pigs with H1N1 swine flu on a farm in Western Canada. The worker had recently traveled to Mexico and fell ill with H1N1 swine flu upon his return. When he returned to work on the farm in mid-April, 8 to 10 days later the pigs showed signs of sickness. All of the pigs were quarantined and have since recovered as the infection was mild. The farm worker also has recovered from the illness.
This is the first case of human to animal transmission of the H1N1 swine flu and according to the WHO food safety scientist, Peter Ben Embarek, it's not a big surprise because it's expected pigs could get infected in areas where the virus is circulating.
There is concern that with back and forth transmission between humans and animals that the H1N1 influenza A virus can mutate.
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