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OpenWaldorf.com, http://www.openwaldorf.com/health.html.
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Вспышки коклюша в США: Centers for Disease Control and Prevention, Pertussis Outbreak in an Amish Community – Kent County, Delaware, September 2004 – February 2005, Morbidity and Mortality Weekly Report 55 (2006): 817–821; Illinois Department of Public Health, Pertussis Outbreak Prompts Public Health Warning: At Least 69 Sickened in Four Chicago-Area Counties, http://archives.lincolndailynews.com/2004/Jun/24/Features_new/health_b.shtml, 18 июня 2004 г.; Centers for Disease Control and Prevention, Use of Mass Tdap Vaccination to Control an Outbreak of Pertussis in a High School – Cook County, Illinois, September 2006 – January 2007, Morbidity and Mortality Weekly Report 57 (2008): 796–799; Centers for Disease Control and Prevention, School-Associated Pertussis Outbreak – Yavapai County, Arizona, September 2002 – February 2003, Journal of the American Medical Association 291 (2004): 1952–1954; Centers for Disease Control and Prevention, Pertussis Outbreak – Vermont, 1996, Morbidity and Mortality Weekly Report 46 (1997): 822–826; CDC Reported Highest Number of Whooping Cough Cases in Nearly Forty Years, http://www.medicalnewstoday.com/articles/15220.php; Centers for Disease Control and Prevention, Pertussis – United States, 1997–2000, Morbidity and Mortality Weekly Report 51 (2002): 73–76.