Sightsavers Reports

Bayesian geostatistical model-based estimates of soil-transmitted helminth infection in Nigeria, including annual deworming requirements

Infections with three kinds of parasitic worms – hookworm, roundworm, and whipworm – are collectively known as soil-transmitted helminths (STHs). These parasitic worm infections are widespread in Nigeria, but the exact distribution is poorly understood. In view of the global commitment to control STH infections, there is a need to accelerate the mapping of STH infections to guide control interventions, such as large-scale administration of deworming drugs.

In this study, we collated survey data from the year 2011 for Nigeria. The data were utilised to predict the distribution of STH infection based on environmental and socioeconomic covariates, and employing a Bayesian geostatistical modeling approach. Our results indicated that STH infections are widely distributed across Nigeria with prevalence estimates as high as 83% for roundworm, 50% for hookworm, and 19% for whipworm infections at specific survey locations.

We predict that 5.7 million school-aged children were infected with STHs. The numbers of deworming tablets for annual or bi-annual treatment of the school-aged population at local government areas level in Nigeria for 2011 were estimated to be 10.2 million.

View of a woman sitting in the shallows of a river in Nigeria. She is looking up at the camera and uses a large bucket to collect water.
Type
Journal article
Theme
NTD
Date published
24/04/2014
Journal
PloS Neglected Tropical Disease
Format
PDF
Language
English
Relevant links
http://journals.plos.org/plosntds/article/file?id=10.1371/journal.pntd.0003740&type=printable
Back to 'Publications and resources'