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Operario, Darwin J.; Platts-Mills, James A.; Nadan, Sandrama; Page, Nicola; Seheri, Mapaseka; Mphahlele, Jeffrey; Praharaj, Ira; Kang, Gagandeep; Araujo, Irene T.; Leite, Jose Paulo G.; Cowley, Daniel; Thomas, Sarah; Kirkwood, Carl D.; Dennis, Francis; Armah, George; Mwenda, Jason M.; Wijesinghe, Pushpa Ranjan; Rey, Gloria; Grabovac, Varja; Berejena, Chipo; Simwaka, Chibumbya J.; Uwimana, Jeannine; Sherchand, Jeevan B.; Thu, Hlaing Myat; Galagoda, Geethani; Bonkoungou, Isidore J. O.; Jagne, Sheriffo; Tsolenyanu, Enyonam; Diop, Amadou; EnweronuLaryea, Christabel; Borbor, Sam-Aliyah; Liu, Jie; McMurry, Timothy; Lopman, Benjamin; Parashar, Umesh; Gentsch, John; Steele, A. Duncan; Cohen, Adam; Serhan, Fatima; Houpt, Eric R.
The Journal of infectious diseases, 07/2017, Letnik: 216, Številka: 2Journal Article
Background. The etiology of acute watery diarrhea remains poorly characterized, particularly after rotavirus vaccine introduction. Methods. We performed quantitative polymerase chain reaction for multiple enteropathogens on 878 acute watery diarrheal stools sampled from 14 643 episodes captured by surveillance of children <5 years of age during 2013–2014 from 16 countries. We used previously developed models of the association between pathogen quantity and diarrhea to calculate pathogen-specific weighted attributable fractions (AFs). Results. Rotavirus remained the leading etiology (overall weighted AF, 40.3% 95% confidence interval {CI}, 37.6%–44.3%), though the AF was substantially lower in the Americas (AF, 12.2 95% CI, 8.9–15.6), based on samples from a country with universal rotavirus vaccination. Norovirus GII (AF, 6.2 95% CI, 2.8–9.2), Cryptosporidium (AF, 5.8 95% CI, 4.0–7.6), Shigella (AF, 4.7 95% CI, 2.8–6.9), heat-stable enterotoxin-producing Escherichia coli (ST-ETEC) (AF, 4.2 95% CI, 2.0–6.1), and adenovirus 40/41 (AF, 4.2 95% CI, 2.9–5.5) were also important. In the Africa Region, the rotavirus AF declined from 54.8% (95% CI, 48.3%–61.5%) in rotavirus vaccine age-ineligible children to 20.0% (95% CI, 12.4%–30.4%) in age-eligible children. Conclusions. Rotavirus remained the leading etiology of acute watery diarrhea despite a clear impact of rotavirus vaccine introduction. Norovirus GII, Cryptosporidium, Shigella, ST-ETEC, and adenovirus 40/41 were also important. Prospective surveillance can help identify priorities for further reducing the burden of diarrhea.
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in: SICRIS
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