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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Rates and intensity of re-infection with human helminths after treatment and the influence of individual, household, and environmental factors in a Brazilian community
Parasitology, Volume 138, No. 11, Year 2011
Notification
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Description
This study quantifies the rate and intensity of re-infection with human hookworm and Schistosoma mansoni infection 12 months following successful treatment, and investigates the influence of socio-economic, geographical and environmental factors. A longitudinal study of 642 individuals aged over 5 years was conducted in Minas Gerais State, Brazil from June 2004 to March 2006. Risk factors were assessed using interval censored regression for the rate and negative binomial regression for intensity. The crude rate and intensity of hookworm re-infection was 0A.21 per year (95% confidence interval (CI) 0A.15-0A.29) and 70A.9 epg (95% CI 47A.2-106A.6). For S. mansoni the rate was 0A.06 per year (95% CI 0A.03-0A.10) and intensity 6A.51 epg (95% CI 3A.82-11A.11). Rate and intensity of re-infection with hookworm were highest among males and positively associated with previous infection status, absence of a toilet and house structure. Rate and intensity of S. mansoni re-infection were associated with previous infection status as well as geographical, environmental and socio-economic factors. The implications of findings for the design of anti-helminth vaccine trials are discussed. © Copyright Cambridge University Press 2011.
Authors & Co-Authors
Cundill, Bonnie
Unknown Affiliation
Alexander, Neal Douglas Edward
Unknown Affiliation
Bethony, Jeffrey Michael
Unknown Affiliation
Diemert, David Joseph
Unknown Affiliation
Pullan, Rachel L.
Unknown Affiliation
Brooker, Simon J.
Unknown Affiliation
Statistics
Citations: 42
Authors: 6
Affiliations: 6
Identifiers
Doi:
10.1017/S0031182011001132
e-ISSN:
14698161
Research Areas
Environmental
Study Design
Cohort Study
Study Approach
Quantitative