Varies: Infants under a year of age have no immunity to swine flu. They can be vaccinated and the vaccine works about 50-60 percent of the time after 2 doses. Most do well with illness eventually. They can get very ill, need hospitalization or even die from swine flu. They are in the high risk group for complications and would benefit from treatment with the anti-flu medicine tamiflu (oseltamivir).
Answered 1/6/2014
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