The FDA just recently "licensed" this years flu vaccine which means that production can begin. It was reported the that US Government is taking control of the entire vaccine supply and distributing to states based on population.
"The H1N1 vaccines approved today undergo the same rigorous FDA manufacturing oversight, product quality testing and lot release procedures that apply to seasonal influenza vaccines," said Jesse Goodman, M.D., FDA acting chief scientist.
Based on preliminary data from adults participating in multiple clinical studies, the 2009 H1N1 vaccines induce a robust immune response in most healthy adults eight to 10 days after a single dose, as occurs with the seasonal influenza vaccine.
The release goes onto say that the flu vaccine that is currently available covers against three seasonal virus strains but do not protect against H1N1.
Kathleen Sebelius the secretary of the Department of Health and Human Services said: The plan is to begin the large-scale vaccination program in mid-October in as many as 90,000 sites, though limited amounts of the vaccine are expected to be available a week to 10 days earlier.