This study examined 184 legionellosis outbreaks in the United States reported to the Centers for Disease Control and Prevention's Waterborne Disease and Outbreak Surveillance System, from 2001 to 2017. Drinking water characteristics examined include source water type, disinfectant type, exposure setting, geographical distribution by U.S. Census Divisions, and the public water system size (population served). This study found that most of the reported drinking water-associated legionellosis outbreaks occurred in eastern United States, including 35% in the South Atlantic, 32% in the Middle Atlantic, and 16% in the East North Central Census Divisions were linked with building water systems in healthcare and hotel settings; and were associated with buildings receiving drinking water from public water systems serving >10,000 people. Targeted evaluations and interventions may be useful to further determine the combination of factors, such as disinfectant residual type and drinking water system size that may lead to legionellosis outbreaks.

本研究检查了 2001 年至 2017 年美国向疾病控制和预防中心的水传播疾病和暴发监测系统报告的 184 起军团病暴发。检查的饮用水特征包括水源水类型、消毒剂类型、暴露环境、美国的地理分布人口普查部门和公共供水系统规模（服务人口）。这项研究发现，大多数报告的与饮用水相关的军团病暴发发生在美国东部，其中 35% 发生在南大西洋，32% 发生在大西洋中部，16% 发生在中东北部人口普查部门与建筑用水有关医疗保健和酒店环境中的系统；并且与从为超过 10,000 人服务的公共供水系统接收饮用水的建筑物有关。