About 800,000 doses of swine flu vaccine for young children were recalled in the United States on Tuesday when the manufacturer discovered that the vaccine wasn’t as potent as it should be.

Most of the doses – some of which were received in the Bay Area – already have been given to children, but the recalled vaccine poses no health risks and children who received the shots do not need to be revaccinated, public health officials said.

The state received about 47,800 doses of the recalled vaccine. At least two Bay Area counties had some of the vaccine – San Francisco received about 9,000 doses and Santa Clara County received about 900 doses. The San Francisco Public Health Department will send back 500 unused doses of the recalled vaccine, but the rest of it probably has been used.

“We suspect there’s no real implication,” said Dr. Susan Fernyak, director of communicable disease control and prevention at the San Francisco Department of Public Health. “Most likely children who already received the vaccine are going to have an adequate immune response. We’re going to accept they got proper immunity from it.”

Source/Full Story: Kids given recalled swine flu shot not at risk

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