Kids' Swine flu shots recalled; not strong enough

December 15, 2009 By MIKE STOBBE , AP Medical Writer

(AP) -- Hundreds of thousands of swine flu shots for children have been recalled because tests indicate the vaccine doses lost some strength, government health officials said Tuesday.

The recall is for about 800,000 pre-filled syringes intended for young children, ages 6 months to nearly 3 years. The shots, made by Sanofi Pasteur, were distributed across the country last month and most have already been used, according to the .

Doctors were notified of the voluntary recall on Tuesday. Dr. Anne Schuchat, a CDC flu expert, stressed that parents don't need to do anything or to worry. The is still safe, she said.

The issue is the vaccine's strength. Tests done before the shots were shipped showed that the vaccines were strong enough. But tests done weeks later indicated the strength had fallen slightly below required levels. Why the potency dropped isn't clear.

Children in that age group are supposed to get two doses, spaced about a month apart. Health officials don't think children need to get vaccinated again, even if they got two doses from the same lots, said Schuchat.

has been available since early October, and since then manufacturers have released about 95 million doses for distribution in the United States.

The recalled shots were made by Sanofi Pasteur, the vaccines division of France-based Sanofi-Aventis Group. The company reported the potency findings to the government officials and did a voluntary recall. A Sanofi Pasteur representative could not immediately be reached for comment Tuesday.

Sanofi Pasteur bills itself as the No. 1 manufacturer of flu vaccines in the world. It makes vaccine at sites in France and in Pennsylvania.

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