Characterizing Norovirus Transmission from Outbreak Data, United States

被引：16
|
作者：
Steele, Molly K. [1 ]
Wikswo, Mary E. [2 ]
Hall, Aron J. [1 ,2 ]
Koelle, Katia [1 ]
Handel, Andreas [3 ]
Levy, Karen [1 ]
Waller, Lance A. [1 ]
Lopman, Ben A. [1 ]
机构：
[1] Emory Univ, Atlanta, GA 30322 USA
[2] Ctr Dis Control & Prevent, 1600 Clifton Rd NE,Mailstop H24-7, Atlanta, GA 30329 USA
[3] Univ Georgia, Athens, GA 30602 USA
来源：
EMERGING INFECTIOUS DISEASES | 2020年 / 26卷 / 08期
基金：
美国国家卫生研究院;
关键词：
NORWALK VIRUS-INFECTION; NOSOCOMIAL TRANSMISSION; GASTROENTERITIS; SUSCEPTIBILITY; INACTIVATION; IMMUNITY; SURVEILLANCE; VOLUNTEERS; CHALLENGE; DURATION;
D O I：
10.3201/eid2608.191537
中图分类号：
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号：
100102 ;
摘要：
Norovirus is the leading cause of acute gastroenteritis outbreaks in the United States. We estimated the basic (R-0) and effective (R-e) reproduction numbers for 7,094 norovirus outbreaks reported to the National Outbreak Reporting System (NORS) during 2009-2017 and used regression models to assess whether transmission varied by outbreak setting. The median R-0 was 2.75 (interquartile range [IQR] 2.38-3.65), and median R e was 1.29 (IQR 1.12-1.74). Long-term care and assisted living facilities had an R-0 of 3.35 (95% CI 3.26-3.45), but R-0 did not differ substantially for outbreaks in other settings, except for outbreaks in schools, colleges, and universities, which had an R-0 of 2.92 (95% CI 2.82-3.03). Seasonally, R-0 was lowest (3.11 [95% CI 2.97-3.25]) in summer and peaked in fall and winter. Overall, we saw little variability in transmission across different outbreaks settings in the United States.
引用
收藏
页码：1818 / 1825
页数：8
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