期刊
EPIDEMIOLOGY AND INFECTION
卷 143, 期 2, 页码 267-273出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0950268814000880
关键词
Escherichia coli O157; haemolytic uraemic syndrome; HUS; Shiga toxin; surveillance
资金
- Intramural CDC HHS [CC999999] Funding Source: Medline
US public health laboratories began reporting Escherichia coli O157 isolates to CDC in 1996. We describe temporal and geographical patterns of isolates reported from 1996 to 2011 and demographics of persons whose specimens yielded isolates. We calculated annual E. coli O157 isolation rates/100000 persons by patient's state of residence, county of residence, age, and sex using census data. The average annual isolation rate was 0.84. The average isolation rate in northern states (1.52) was higher than in southern states (0.43). Counties with 576% rural population had a lower isolation rate (0.67) than counties with 425%, 26-50%, and 51-75% rural populations (0.81, 0.92, and 0.81, respectively). The highest isolation rate (3.19) was in children aged 1-4 years. Infections were seasonal with 49% of isolates collected during July to September. Research into reasons for higher incidence in northern states and for seasonality could guide strategies to prevent illnesses.
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