The World Health Organization (WHO) recommends preventive chemotherapy (PC) as the primary intervention to control morbidity of soil-transmitted helminthiasis (STH). In this series of maps we present the impact of the intervention on the morbidity caused by STH (in the case of STH only infections of moderate heavy intensity cause morbidity). The prevalence of infections of moderate heavy intensity (MHI) in countries that after 5 years of intervention conducted impact survey is presented in different shades of pink (https://youtu.be/P2RZE5UoSU0).
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The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted and dashed lines on maps represent approximate border lines for which there may not yet be full agreement. The borders of the map provided reflect the current political geographic status as of the date of publication (2021). However, the technical health information is based on data accurate with respect to the year indicated (2020). The disconnect in this arrangement should be noted but no implications regarding political or terminological status should be drawn from this arrangement as it is purely a function of technical and graphical limitations.

Vietnam (VN)

Info Deworming Country 2018 2019 2020 2021 2022
Implementation units in need of treatment (last evaluation) ND
Preschool-age children in need of treatment (last estimation) 1,774,015
School-age children in need of treatment (last estimation) 4,723,667
Pregnant women in need of treatment ND
Start of PC activities 2006
Coverage of preschool-age children (last 5 years) % 48.9 54.8 25.9 ND 46.3
Coverage of school-age children (last 5 years) % 39.4 98.0 19.1 81.1 97.3
Drug used preschool-age children (last 5 years) ALB ALB/MBD ALB/MBD ND ND
Drug used school-age children (last 5 years) ALB/MBD ALB/MBD ALB/MBD ND ND
No. of epidemiological units available for baseline estimation (year)-source 33 (2015 - 2018) - EPIRF
No. of epidemiological units available for follow up estimation (year)-source 28 (2021 - 2023) - EPIRF, Report 2023
DescriptionAbbreviations
No data availableND
AlbendazoleALB
MebendazoleMBD

STH (%) was recalculated on the total sample and not only on the positive as in the original publication ( download chart)



MHI (%) was recalculated on the total sample and not only on the positive as in the original publication ( download chart)