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Prophylactic holiday in Mexico?
Influenza A H1N1 is turning into a pandemic. What will the number of cases be, what groups will be the most affected, how virulent will the virus be, and how long will it last?
Influenza A H1N1 is turning into a pandemic. What will the number of cases be, what groups will be the most affected, how virulent will the virus be, and how long will it last?