[nemeth88]

This is a somewhat strange story re: "the flu" and I'm guessing that's why it's been downvoted.

The flu is a virus and antibiotics have no effect on it. There is a yearly vaccine for the flu and the CDC recommends all adults take it, although it usually only protects about 40-70% of the time due to the large number of flu strains in circulation. The flu is a deadly disease and even a person in good health (taking vitamins, etc) in the prime of their life can be killed by it, which is why vaccination is recommended.