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No Side Effects in Trial of Swine Flu Shot
WHO says swine flu will continue to spread in an “explosion” of cases in the coming months, jeopardizing the health of many around the world.
WHO’s Western Pacific director cautions of an “explosion in case numbers” in many countries, which could see H1N1 incidences double every three to four days for several months as temperatures decrease.
The virus has already claimed the lives of almost 1,800 people worldwide and will continue to cause deaths internationally, especially in developing countries, which are ill-equipped to battle the strain.
Federal health official: There have been no serious side effects from the first set of injections of the new swine flu vaccine.
Clinical trials in adults began on Aug. 7. “There are no red flags regarding safety,” said Dr. Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, which is overseeing the trials.
The vaccine will be tested in about 4,500 people. That is far too few to pick up subtle side effects, but the virus strain in the vaccine is close enough to one strain in seasonal shots so that side effects are expected to be similar.
The trials will help officials decide whether to recommend one dose or two. Even with seasonal flu shots, young children who have never had the flu sometimes need two doses to get a “take” — vaccinologist jargon for a protective immune response.
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