There should be no repeat of the flu vaccine shortages of the last few years according to the CDC. Federal officials stated that at least 100 million doses would be available over the next few months, with at least 75 million available by October, the recommended period for having the flu shot. This gives the body time to build up immunity before the flu season officially starts in December and January. This should also mean that all those on the recommended list for receiving the shot should be able to get one.