Cases were distributed across many ethnicities, with a plurality of individuals being of the Sara Kaba ethnicity (21.3%). About 34.2% of case-patients were farmers. Approximately half of case-patients were female, and 65.8% of case-patients were aged 30 years or younger (mean: 26.4 years). In total, 114 human cases were reported during the years 2010–2018, with highest rates of containment (i.e., water contamination prevented) in the years 2013, 2014, 2016, and 2017 ( P < 0.0001). In this report, we use surveillance data collected by the Chad Guinea Worm Eradication Program to describe trends in human epidemiology. Today, the greatest number of cases is reported from Chad.
The total number of Guinea worm cases has been reduced by 99.9% since the mid-1980s when the eradication campaign began.
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