Swine Flu Vaccine: Enough to Go Around?

Photo: Volunteers Wanted To Test Swine Flu Vaccine: Govt Readies Swine Flu Clinical Trials To Prepare For Expected Fall Surge of H1N1

Government health officials said on Monday that the United States will have barely more than a third of the 120 million doses of swine flu they hoped would be available by mid-October. That's far less than the 160 million doses they originally predicted in July.

Bill Hall, spokesman for the U.S. Department of Health and Human Services, said that despite the projection that only 45 million doses will be available at the start of the mass vaccination campaign scheduled to start in October, there would still be enough vaccine available to achieve the primary goal of vaccinating the groups most in need, including pregnant women; children under four years old and public health workers. . "Our priority groups for vaccination have not changed," he said. "We still have enough vaccine to cover the priority groups identified."

Hall added that even after the first wave of the vaccine is made available, manufacturers will continue to churn out 20 million doses each week.

"Early on, there were issues with production yield, but that has improved significantly over the past several weeks," Hall said. He noted that other confounding factors, such as one company finishing production of its regular seasonal flu vaccine behind schedule, further slowed the production of the swine flu vaccine.

Still, Monday's revelation comes amid warnings from infectious disease experts of a fall resurgence of the pandemic strain of the H1N1 virus. And Hall said the results of the tests that will determine whether one or two doses of the vaccine are necessary to prevent sickness have not yet yielded results.

Dr. William Schaffner, chairman of the Department of Preventive Medicine at Vanderbilt University in Nashville, Tenn., said that the latest status report is troubling news.

"We've been in a race to try and get this vaccine manufactured," he told ABC News' Diane Sawyer on "Good morning America" on Tuesday. "It makes us all a little bit nervous.

"We won't have as much vaccine to start a vaccine program, and we're worried that we will have people sick that could have been prevented and people in the hospital that could have been prevented."

Swine Flu Vaccine Production Met Delays, Other Hurdles

Last week, the U.S. Centers for Disease Control and Prevention said that since the swine flu appeared roughly four months ago, it has sent 7,511 Americans to the hospital and killed 477.

Disease specialists have pointed out that despite these numbers the impact of the swine flu has been relatively mild. And Hall said that the anticipated shortfall in the vaccine supply was not completely unanticipated – a statement with which influenza experts agreed.

"A lot of things go into the making of a flu vaccine, which is a complex, multi-step process," said Dr. John Treanor, professor of Medicine, Microbiology and Immunology at the University of Rochester Medical Center in Rochester, N.Y. " I actually think it is amazing that 45 million doses will be ready by October; after all, the virus wasn't even recognized until the end of April."

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