Laramie, Wy – The two companies that make the flu shot say they don't have any more stock of the vaccine.
The two companies that produce the shot are Chiron and Aventis Pasteur. Together they made about 80 million doses of the vaccine.
Aventis spokesman Len Lavenda says that many shots are usually enough, but that the recent flu outbreak has brought a surge in demand.
Aventis has shipped all of its supplies and Chiron says the company has sent all of its production to distributors.
It takes four months to make the vaccine, so no more will be available until next year.
The flu has hit Wyoming hard this season, with at least one child have died from the flu and 475 confirmed cases.
Health departments across the state say they're short on vaccine.