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20 flu-related hospitalizations so far in October

By: By Associated Press
http://www.jsonline.com/
2014-10-23

Madison &mdas...
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Vaccine trials off to fast start for pandemic flu


By: Steve Sternberg on 2009-08-18
USA Today

Nicholas Sarakas says his mother urged him not to take part in pandemic vaccine trials. “She was worried about me. She didn’t want them guinea-pigging me,” he says. “She made me promise never to be in another clinical trial.”

Sarakas, 25, decided to volunteer anyway. A college student without health insurance at the University of Missouri in St. Louis, he reasoned that he’d rather take his chances with the vaccine, and its risks, than pandemic flu.

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“There are people my age that are dying from this,” he says.

Early Monday, Sarakas rolled up his sleeves for an injection in each arm, becoming one of dozens of adults enrolling in an unprecedented flurry of fast-track flu vaccine trials that will grow to include 11,131 adults and 5,740 children, with more trials planned.

The vaccine is designed to blunt the effect of a virus that, starting this fall, could infect 100 million people in the USA and cause 30,000 to 90,000 deaths based on scenarios drawn from past pandemics, says Arnold Monto of the University of Michigan, an adviser to the Centers for Disease Control and Prevention and the World Health Organization. About 36,000 people in the USA die each year of flu.

The virus, a new type of H1N1 strain also known as swine flu, has been linked to 6,506 hospitalizations and 436 deaths in the USA — up from 353 a week ago — since it emerged in Mexico in April.

Too many volunteers to count

The U.S. government has ordered roughly 195 million doses of pandemic flu vaccine, in addition to the 120 million doses of seasonal flu vaccine expected to be available by the end of September.

“Vaccine is a huge component of the public health response to influenza,” says Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, which is sponsoring the trial that enrolled Sarakas at Saint Louis University and four other trials at eight federally funded vaccine research centers across the country.

The flurry of swine flu vaccine trials, some sponsored by the U.S. government and others by five vaccine manufacturers, began late last week. Now people are clamoring to take part.

“We’ve had over 1,000 people call wanting to participate,” says Sharon Frey, lead investigator of the St. Louis study. “We’ve stopped counting.”

Frey says she expects to meet her quota of 200 volunteers by next week, thanks to widespread publicity.

Side effects, dosages unknown

“I feel really lucky that I get to participate,” says Karla Payne, 54, of Westchester, Ohio, who got her shots Monday in a study at Cincinnati Children’s Hospital Medical Center. “I used to work in the public schools. So many students didn’t have money for health care. When I saw in the paper that they would start using schools to vaccinate kids, I thought, gosh, this would be a good thing to do, because they need to get vaccine out there.”

The studies are necessary because so little is known about the pandemic vaccine, though many researchers believe it is likely to act much like seasonal vaccines, says Bruce Gellin, director of the Department of Health and Human Services National Vaccine Program Office.

Flu vaccines historically have few side effects beyond redness and soreness at the infection site. Studies of several thousand volunteers aren’t big enough to detect more subtle side effects such as Guillain-Barré syndrome, a rare nerve ailment that crops up in one of every million flu vaccine recipients. Federal health agencies have ramped up surveillance efforts to detect any severe side effects that might occur.

There are other uncertainties as well. For instance, vaccine makers don’t know how big a dose to give, how many doses will be needed per person for protection and whether it will be necessary to add an immune-booster called an adjuvant.

Each one of those factors may affect how many people can be vaccinated. For instance, if the usual 15-microgram dose has to be doubled, the number of people who could be vaccinated would fall to 98 million. If two shots are required at double the dose, the number of people who could be vaccinated would drop further, to 50 million.

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Sources: Company data, Food and Drug Administration and the National Institutes of Health


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