Study: One Dose of Swine Flu Vaccine Enough

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Researchers now say just one shot of the new swine flu vaccine is strong enough to protect adults.
The innoculation will take effect in eight to ten days.

Australian pharmaceutical company CSL Ltd. released results of a study that found between 75 percent and 96 percent of people with the vaccine should be protected with one dose. The same goes for the regular winter flu shots also. 

Scientists previously thought it would take two shots. Health experts are now encouraging people to get their regular winter flu shot now and then get the swine flu shot in October when it becomes available.

Thursday's report only applies to adults for the time being. Studies of the H1N1 vaccine on children have not been completed yet.
Meanwhile, there has been a big spike in the H1N1 virus in the southeast.

"Schools reopened a bit earlier. Perhaps more of a chance for mixing, said Dr. Anne Schuchat for the Centers for Disease Control. "Another possibility is that southeast states were not that heavily hit in the spring so they may just be getting their spring hit now."

More than 200 students on North Carolina State's campus have come down with flu-like symptoms believed to be the swine flu.

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