Why does CDC advise pregnant women to receive the 2009 H1N1 influenza (flu) vaccine (shot)?
Getting the flu shot is the single best way to protect against the flu. It is important for a pregnant woman to receive both the 2009 H1N1 flu shot and the seasonal flu shot. A pregnant woman who gets any type of flu has a greater chance for serious health problems. Compared with people in general who get 2009 H1N1 flu (formerly called “swine flu”), pregnant women with 2009 H1N1 flu are more likely to be admitted to hospitals. Pregnant women are also more likely to have serious illness and death from 2009 H1N1 flu. When a pregnant woman gets a flu shot, it can protect both her and her baby. Research has found that pregnant women who had a flu shot get sick less often with the flu than do pregnant women who did not get a flu shot. Babies born to mothers who had a flu shot in pregnancy also get sick with flu less often than do babies whose mothers did not get a flu shot.
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Are there flu vaccines that pregnant women should not get?
The seasonal and 2009 H1N1 flu vaccines can be given by shot or by nasal spray. Pregnant women should get the "flu shot"—a vaccine made with killed flu virus. This one is given with a needle, usually in the arm. The other type of flu vaccine—a nasal spray—is not approved for pregnant women. This vaccine is made with live, weakened flu virus. Nasal spray flu vaccine should be used only in healthy people 2-49 years of age who are not pregnant. The nasal spray vaccine is safe for women after they have delivered, even if they are nursing.
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Is the 2009 H1N1 flu shot safe for pregnant women?
The seasonal flu shot has been given to millions of pregnant women over many years. Flu shots have not been shown to cause harm to pregnant women or their babies. The 2009 H1N1 flu vaccine is being made in the same way and at the same places where the seasonal flu vaccine is made.
What studies have been done on the 2009 H1N1 flu shots and have any been done in pregnant women?
Studies to test the 2009 H1N1 flu shots in healthy children and adults and pregnant women are being done now. Results are available from some of the studies done in non-pregnant adults and children. These results show that the immune system responded well to the 2009 H1N1 vaccine, and the safety results were very similar to those seen in studies of seasonal flu vaccine. These studies are being conducted by the National Institute of Allergy and Infectious Diseases (NIAID) and the vaccine manufacturers. More information can be found at
http://www3.niaid.nih.gov/news/QA/vteuH1N1qa.htm
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Can the 2009 H1N1 flu shot be given at any time during pregnancy?
Both seasonal flu shots and 2009 H1N1 flu shots are recommended for pregnant women at any time during pregnancy.
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