What are the chances of getting swine flu after preventive treatment?

Q: What are the chances of getting swine flu after giving 10 days prophylactic dose of Oseltamivir? Will the effectiveness of the drug reduce if a person suffers from swine flu later?

A:I think you are referring to the chances of a person known to have beenexposed to some one with diagnosed H1N1 flu and given 10 days prophylactictreatment. Such a person should not develop any serious H1N1 infection. Ifyou get swine flu at a later date, the drug should generally be efficacious.