Legionnaires’ — United States
Incidence of legionnaires’ disease in the United States is increasing. We reviewed case records to determine the epidemiology of and risk factors for the 1449 cases reported to the New York City Department of Health and Mental Hygiene, New York, New York, USA, during 2002-2011. The highest incidence (2.74 cases/100 000 population) occurred in 2009; this incidence was higher than national incidence for that year (1.15 cases/100 000 population). Overall, incidence of legionnaires’ disease in the
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