Normally, swine flu doesn’t infect humans. From December 2005 through February 2009, only 12 people were reported to be infected with swine flu. In most of these cases, these people had direct exposure to pigs. Since March 2009, though, the virus started spreading in humans in San Diego County and Imperial County, California, as well as in San Antonio, Texas and in Mexico. The total number of cases in the US alone in this month was 11 (the same number of humans infected in 4 years).
A Disease A Day: In The News – Swine Flu (Influenza) - All You Wanted To Know
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