NEW : Vaccine is about 62 % effective , CDC director says . Getting the flu vaccine is n't a guarantee that you 'll be healthy . The vaccine generally works better `` in young , healthy people than it does in older persons , '' Schaffner said . The most common flu strain this season is a match with the vaccine . Comment:
NEW : Vaccine is about 62 % effective , CDC director says . Getting the flu vaccine is n't a guarantee that you 'll be healthy . The most common flu strain this season is a match with the vaccine . Comment: