Abstract
From 2006 to 2007, an active surveillance program for human monkeypox (MPX) in the Democratic Republic of the Congo identified 151 cases of coinfection with monkeypox virus and varicella zoster virus from 1158 suspected cases of human MPX (13%). Using clinical and socio-demographic data collected with standardized instruments by trained, local nurse supervisors, we examined a variety of hypotheses to explain the unexpectedly high proportion of coinfections among the sample, including the hypothesis that the two viruses occur independently. The probabilities of disease incidence and selection necessary to yield the observed sample proportion of coinfections under an assumption of independence are plausible given what is known and assumed about human MPX incidence. Cases of human MPX are expected to be underreported, and more coinfections are expected with improved surveillance.


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Acknowledgements
A previous version of this article appeared as a chapter in Dr. Morier’s dissertation for the UCLA Department of Epidemiology. He would like to gratefully acknowledge the members of his doctoral committee for their contributions. Thanks to Monique Ambrose of the Lloyd-Smith lab group for her suggestions of probabilistic analyses.
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This work was supported by the Faucett Catalyst Fund.
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This study was reviewed and approved by the Ethics Committee of the Kinshasa School of Public Health, Kinshasa, DRC, and by the Institutional Review Board of Human Research Ethics at the University of California, Los Angeles.
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Douglas S. Morier and Nicole A. Hoff are considered co-first authors for this manuscript.
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Hoff, N.A., Morier, D.S., Kisalu, N.K. et al. Varicella Coinfection in Patients with Active Monkeypox in the Democratic Republic of the Congo. EcoHealth 14, 564–574 (2017). https://doi.org/10.1007/s10393-017-1266-5
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DOI: https://doi.org/10.1007/s10393-017-1266-5