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swine flu
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Between 25 and 30 percent of pigs worldwide carry antibodies to swine influenza viruses, which indicates that these animals have been exposed to swine flu. immunization
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swine flu: Facts & Related Content

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Facts

Also Known As hog flu • swine influenza • pig flu

Photos

Between 25 and 30 percent of pigs worldwide carry antibodies to swine influenza viruses, which indicates that these animals have been exposed to swine flu.
immunization
See All Images →

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Related Quizzes and Features

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Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
44 Questions from Britannica’s Most Popular Health and Medicine Quizzes