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Symptoms
By Mayo Clinic staffSwine flu symptoms in humans are similar to those of infection with other flu strains:
- Fever
- Cough
- Sore throat
- Body aches
- Headache
- Chills
- Fatigue
- Diarrhea
- Vomiting
Swine flu symptoms develop three to five days after you're exposed to the virus and continue for about eight days, starting one day before you get sick and continuing until you've recovered.
When to see a doctor
It's not necessary to see a doctor if you're generally healthy and you develop swine flu symptoms, such as fever, cough and body aches. Do call your doctor, however, if you have flu symptoms and you're pregnant or you have a chronic disease, such as emphysema or a heart condition.
- Centers for Disease Control and Prevention. Swine influenza A (H1N1) infection in two children — Southern California, March-April 2009. Morbidity and Mortality Weekly Report. 2009;58:400. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5815a5.htm. Accessed Aug. 18, 2010.
- World Health Organization. World now at the start of 2009 influenza pandemic. Statement to the press by WHO Director-General Margaret Chan. http://www.who.int/mediacentre/news/statements/2009/h1n1_pandemic_phase6_20090611/en/index.html. Accessed Aug. 18, 2010.
- World Health Organization. H1N1 in post-pandemic period. Director-General's opening statement at virtual press conference. http://www.who.int/mediacentre/news/statements/2010/h1n1_vpc_20100810/en/index.html. Accessed Aug. 19, 2010.
- Watts G. A/H1N1 influenza virus: The basics. British Medical Journal. 2009;339:b3046. http://www.bmj.com/cgi/content/full/339/jul24_2/b3046. Accessed Aug. 18, 2010.
- Centers for Disease Control and Prevention. Background information on influenza in pigs. http://www.cdc.gov/flu/swineflu/. Accessed Aug. 19, 2010.
- Centers for Disease Control and Prevention. Key facts about influenza (flu) and flu vaccine. http://www.cdc.gov/flu/keyfacts.htm. Accessed Aug. 18, 2010.
- Weber TP, et al. Inactivation of influenza A viruses in the environment and modes of transmission: A critical review. Journal of Infection. 2008;51:361.http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WJT-4TMRJXX-2&_user=130561&_coverDate=11%2F30%2F2008&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000010878&_version=1&_urlVersion=0&_userid=130561&md5=0b189b39929f3ee6cdc2ca1371fd1e0c. Accessed Aug. 19, 2010.
- Bean B, et al. Survival of influenza viruses on environmental surfaces. Journal of Infectious Diseases. 1982;146:47.
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