The Peculiar Epidemiology of Dracunculiasis in Chad

Eberhard, Mark L.; Ruiz-Tiben, Ernesto; Hopkins, Donald R.; Farrell, Corey; Toe, Fernand; Weiss, Adam; Withers, P. Craig; Jenks, M. Harley; Thiele, Elizabeth A.; Cotton, James A.; Hance, Zahra; Holroyd, Nancy; Cama, Vitaliano A.; Tahir, Mahamat Ali; Mounda, Tchonfienet

doi:10.4269/ajtmh.13-0554

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The Peculiar Epidemiology of Dracunculiasis in Chad

Published Date:

Nov 25 2013

Publisher's site:

http://dx.doi.org/10.4269/ajtmh.13-0554 New Site Icon

Source:

Am J Trop Med Hyg. 2014; 90(1):61-70.

[PDF - 2.05 MB]

Details:

Personal Authors:

Eberhard, Mark L. ; Ruiz-Tiben, Ernesto ; Hopkins, Donald R. ; Farrell, Corey ; Toe, Fernand ; ... More ▼

Keywords:

[+]

Description:

Dracunculiasis was rediscovered in Chad in 2010 after an apparent absence of 10 years. In April 2012 active village-based surveillance was initiated to determine where, when, and how transmission of the disease was occurring, and to implement interventions to interrupt it. The current epidemiologic pattern of the disease in Chad is unlike that seen previously in Chad or other endemic countries, i.e., no clustering of cases by village or association with a common water source, the average number of worms per person was small, and a large number of dogs were found to be infected. Molecular sequencing suggests these infections were all caused by Dracunculus medinensis. It appears that the infection in dogs is serving as the major driving force sustaining transmission in Chad, that an aberrant life cycle involving a paratenic host common to people and dogs is occurring, and that the cases in humans are sporadic and incidental.

Document Type:

Journal Article

Collection(s):

CDC Public Access

Funding:

098051/Wellcome Trust/United Kingdom

Supporting Files:

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