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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
Networks of face-to-face social contacts in Niakhar, Senegal
PLoS ONE, Volume 14, No. 8, Article e0220443, Year 2019
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Description
We present the first analysis of face-to-face contact network data from Niakhar, Senegal. Participants in a cluster-randomized influenza vaccine trial were interviewed about their contact patterns when they reported symptoms during their weekly household surveillance visit. We employ a negative binomial model to estimate effects of covariates on contact degree. We estimate the mean contact degree for asymptomatic Niakhar residents to be 16.5 (95% C.I. 14.3, 18.7) in the morning and 14.8 in the afternoon (95% C.I. 12.7, 16.9). We estimate that symptomatic people make 10% fewer contacts than asymptomatic people (95% C.I. 5%, 16%; p = 0.006), and those aged 0-5 make 33% fewer contacts than adults (95% C.I. 29%, 37%; p < 0.001). By explicitly modelling the partial rounding pattern observed in our data, we make inference for both the underlying (true) distribution of contacts as well as for the reported distribution. We created an estimator for homophily by compound (household) membership and estimate that 48% of contacts by symptomatic people are made to their own compound members in the morning (95% CI, 45%, 52%) and 60% in the afternoon/ evening (95% CI, 56%, 64%). We did not find a significant effect of symptom status on compound homophily. We compare our findings to those from other countries and make design recommendations for future surveys. © 2019 Potter et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC6684077/bin/pone.0220443.s001.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC6684077/bin/pone.0220443.s002.pdf
Authors & Co-Authors
Potter, Gail E.
United States, Rockville
Emmes
United States, San Luis Obispo
California Polytechnic State University, San Luis Obispo
Sugimoto, Jonathan D.
United States, Seattle
Fred Hutchinson Cancer Center
Diallo, Aldiouma M.
France, Marseille
Ird Institut de Recherche Pour le Developpement
Victor, John C.
United States, Seattle
Path Seattle
Neuzil, Kathleen Maletic
United States, Baltimore
University of Maryland, Baltimore Umb
Elizabeth Halloran, M.
United States, Seattle
Fred Hutchinson Cancer Center
United States, Seattle
University of Washington
Statistics
Citations: 5
Authors: 6
Affiliations: 7
Identifiers
Doi:
10.1371/journal.pone.0220443
ISSN:
19326203
Research Areas
Health System And Policy
Study Design
Randomised Control Trial
Cross Sectional Study
Study Locations
Senegal