TY - JOUR
T1 - Risk of human helminthiases
T2 - Geospatial distribution and targeted control
AU - Yu, Weiwei
AU - Ross, Allen G.
AU - Olveda, Remigio M.
AU - Harn, Donald A.
AU - Li, Yuesheng
AU - Chy, Delia
AU - Williams, Gail M.
N1 - Publisher Copyright:
© 2016 The Author(s)
Includes bibliographical references
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Objectives: We conducted a cross-sectional survey in 2012 among 22 rural barangays in Northern Samar, the Philippines in order to determine the prevalence of single and multiple species helminth infections, their geospatial distribution and underlying risk factors. Methods: A total of 10,434 individuals who had completed both a medical questionnaire and a stool examination were included in the analysis. Barangay specific prevalence rates were displayed in ArcMap. Results: The prevalence of Trichuris trichiura infection was found to be the highest at 62.4%, followed by Ascaris lumbricoides, hookworm and S. japonicum with the prevalence rates of 40.2%, 31.32%, and 27.1%, respectively. 52.7% of people were infected with at least two parasites and 4.8% with all four parasites. Males aged 10-19 years were the most vulnerable to coinfection infection. Students, fishermen, farmers and housewives were the most vulnerable occupations for co-infection of A. lumbricoides and T. trichiura. Considerable heterogeneity in the spatial distribution was observed for the different parasite species. There was a considerably higher risk of A. lumbricoides and T. trichiura co-infection in villages with no schistosomiasis infection (P < 0.0001) regardless of MDA treatment. Conclusions: A better understanding of the geospatial distribution of multi-parasitism will guide future integrated strategies leading to elimination.
AB - Objectives: We conducted a cross-sectional survey in 2012 among 22 rural barangays in Northern Samar, the Philippines in order to determine the prevalence of single and multiple species helminth infections, their geospatial distribution and underlying risk factors. Methods: A total of 10,434 individuals who had completed both a medical questionnaire and a stool examination were included in the analysis. Barangay specific prevalence rates were displayed in ArcMap. Results: The prevalence of Trichuris trichiura infection was found to be the highest at 62.4%, followed by Ascaris lumbricoides, hookworm and S. japonicum with the prevalence rates of 40.2%, 31.32%, and 27.1%, respectively. 52.7% of people were infected with at least two parasites and 4.8% with all four parasites. Males aged 10-19 years were the most vulnerable to coinfection infection. Students, fishermen, farmers and housewives were the most vulnerable occupations for co-infection of A. lumbricoides and T. trichiura. Considerable heterogeneity in the spatial distribution was observed for the different parasite species. There was a considerably higher risk of A. lumbricoides and T. trichiura co-infection in villages with no schistosomiasis infection (P < 0.0001) regardless of MDA treatment. Conclusions: A better understanding of the geospatial distribution of multi-parasitism will guide future integrated strategies leading to elimination.
KW - ArcMap
KW - Control
KW - Geospatial Distribution
KW - Intestinal helminths
KW - Mass Drug Administration (MDA)
KW - Risk Factors
UR - http://www.scopus.com/inward/record.url?scp=85008601738&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008601738&partnerID=8YFLogxK
U2 - 10.1016/j.ijid.2016.12.013
DO - 10.1016/j.ijid.2016.12.013
M3 - Article
C2 - 27988408
AN - SCOPUS:85008601738
SN - 1201-9712
VL - 55
SP - 131
EP - 138
JO - International Journal of Infectious Diseases
JF - International Journal of Infectious Diseases
ER -