Risk profiling of soil-transmitted helminth infection and estimated number of infected people in South Asia: A systematic review and Bayesian geostatistical Analysis
In South Asia, hundreds of millions of people are infected with soil-transmitted helminths (Ascaris lumbricoides, hookworm, and Trichuris trichiura). However, high-resolution risk profiles and the estimated number of people infected have yet to be determined. In turn, such information will assist co...
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| Veröffentlicht in: | PLoS neglected tropical diseases 2019-08, Vol.13 (8), p.e0007580 |
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| creator | Lai, Ying-Si Biedermann, Patricia Shrestha, Akina Chammartin, Frédérique À Porta, Natacha Montresor, Antonio Mistry, Nerges F Utzinger, Jürg Vounatsou, Penelope |
| description | In South Asia, hundreds of millions of people are infected with soil-transmitted helminths (Ascaris lumbricoides, hookworm, and Trichuris trichiura). However, high-resolution risk profiles and the estimated number of people infected have yet to be determined. In turn, such information will assist control programs to identify priority areas for allocation of scarce resource for the control of soil-transmitted helminth infection.
We pursued a systematic review to identify prevalence surveys pertaining to soil-transmitted helminth infections in four mainland countries (i.e., Bangladesh, India, Nepal, and Pakistan) of South Asia. PubMed and ISI Web of Science were searched from inception to April 25, 2019, without restriction of language, study design, and survey date. We utilized Bayesian geostatistical models to identify environmental and socioeconomic predictors, and to estimate infection risk at high spatial resolution across the study region.
A total of 536, 490, and 410 georeferenced surveys were identified for A. lumbricoides, hookworm, and T. trichiura, respectively. We estimate that 361 million people (95% Bayesian credible interval (BCI) 331-395 million), approximately one-quarter of the South Asia population, was infected with at least one soil-transmitted helminth species in 2015. A. lumbricoides was the predominant species. Moderate to high prevalence (>20%) of any soil-transmitted helminth infection was predicted in the northeastern part and some northern areas of the study region, as well as the southern coastal areas of India. The annual treatment needs for the school-age population requiring preventive chemotherapy was estimated at 165 million doses (95% BCI: 146-185 million).
Our risk maps provide an overview of the geographic distribution of soil-transmitted helminth infection in four mainland countries of South Asia and highlight the need for up-to-date surveys to accurately evaluate the disease burden in the region. |
| doi_str_mv | 10.1371/journal.pntd.0007580 |
| format | Article |
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We pursued a systematic review to identify prevalence surveys pertaining to soil-transmitted helminth infections in four mainland countries (i.e., Bangladesh, India, Nepal, and Pakistan) of South Asia. PubMed and ISI Web of Science were searched from inception to April 25, 2019, without restriction of language, study design, and survey date. We utilized Bayesian geostatistical models to identify environmental and socioeconomic predictors, and to estimate infection risk at high spatial resolution across the study region.
A total of 536, 490, and 410 georeferenced surveys were identified for A. lumbricoides, hookworm, and T. trichiura, respectively. We estimate that 361 million people (95% Bayesian credible interval (BCI) 331-395 million), approximately one-quarter of the South Asia population, was infected with at least one soil-transmitted helminth species in 2015. A. lumbricoides was the predominant species. Moderate to high prevalence (>20%) of any soil-transmitted helminth infection was predicted in the northeastern part and some northern areas of the study region, as well as the southern coastal areas of India. The annual treatment needs for the school-age population requiring preventive chemotherapy was estimated at 165 million doses (95% BCI: 146-185 million).
Our risk maps provide an overview of the geographic distribution of soil-transmitted helminth infection in four mainland countries of South Asia and highlight the need for up-to-date surveys to accurately evaluate the disease burden in the region.</description><identifier>ISSN: 1935-2735</identifier><identifier>ISSN: 1935-2727</identifier><identifier>EISSN: 1935-2735</identifier><identifier>DOI: 10.1371/journal.pntd.0007580</identifier><identifier>PMID: 31398200</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Age ; Ancylostomatoidea - isolation & purification ; Animals ; Ascariasis - parasitology ; Ascaris lumbricoides - isolation & purification ; Asia - epidemiology ; At risk youth ; Bangladesh - epidemiology ; Bayes Theorem ; Bayesian analysis ; Biology and Life Sciences ; Chemotherapy ; Coastal zone ; Control programs ; Countries ; Databases, Factual ; Disease prevention ; Disease transmission ; Distribution ; Environment models ; Epidemiology ; Geographical distribution ; Geostatistics ; Health risk assessment ; Health risks ; Helminthiasis ; Helminthiasis - epidemiology ; Helminths - isolation & purification ; High resolution ; Hookworm Infections - epidemiology ; Humans ; Hygiene ; India - epidemiology ; Infection ; Infections ; Mathematical models ; Medical geography ; Medical research ; Medicine and Health Sciences ; Methods ; Nepal - epidemiology ; Pakistan - epidemiology ; People and Places ; Polls & surveys ; Prevalence ; Prevalence studies (Epidemiology) ; Probability theory ; Profiles ; Public health ; Public health administration ; Resolution ; Resource allocation ; Risk assessment ; Risk Factors ; Sanitation ; Sentinel surveillance ; Socioeconomic Factors ; Soil ; Soil - parasitology ; Soils ; Spatial resolution ; Surveying ; Surveys ; Systematic review ; Technology application ; Trichuriasis - epidemiology ; Trichuris - isolation & purification ; Tropical diseases</subject><ispartof>PLoS neglected tropical diseases, 2019-08, Vol.13 (8), p.e0007580</ispartof><rights>COPYRIGHT 2019 Public Library of Science</rights><rights>2019 Lai et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2019 Lai et al 2019 Lai et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c624t-4bcbf6da69d76088b9f90a046abcce911221a1624013246b6b1a5c90294d72e63</citedby><cites>FETCH-LOGICAL-c624t-4bcbf6da69d76088b9f90a046abcce911221a1624013246b6b1a5c90294d72e63</cites><orcidid>0000-0002-4904-5352</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6709929/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6709929/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2102,2928,23866,27924,27925,53791,53793,79600,79601</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31398200$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Fujiwara, Ricardo Toshio</contributor><creatorcontrib>Lai, Ying-Si</creatorcontrib><creatorcontrib>Biedermann, Patricia</creatorcontrib><creatorcontrib>Shrestha, Akina</creatorcontrib><creatorcontrib>Chammartin, Frédérique</creatorcontrib><creatorcontrib>À Porta, Natacha</creatorcontrib><creatorcontrib>Montresor, Antonio</creatorcontrib><creatorcontrib>Mistry, Nerges F</creatorcontrib><creatorcontrib>Utzinger, Jürg</creatorcontrib><creatorcontrib>Vounatsou, Penelope</creatorcontrib><title>Risk profiling of soil-transmitted helminth infection and estimated number of infected people in South Asia: A systematic review and Bayesian geostatistical Analysis</title><title>PLoS neglected tropical diseases</title><addtitle>PLoS Negl Trop Dis</addtitle><description>In South Asia, hundreds of millions of people are infected with soil-transmitted helminths (Ascaris lumbricoides, hookworm, and Trichuris trichiura). However, high-resolution risk profiles and the estimated number of people infected have yet to be determined. In turn, such information will assist control programs to identify priority areas for allocation of scarce resource for the control of soil-transmitted helminth infection.
We pursued a systematic review to identify prevalence surveys pertaining to soil-transmitted helminth infections in four mainland countries (i.e., Bangladesh, India, Nepal, and Pakistan) of South Asia. PubMed and ISI Web of Science were searched from inception to April 25, 2019, without restriction of language, study design, and survey date. We utilized Bayesian geostatistical models to identify environmental and socioeconomic predictors, and to estimate infection risk at high spatial resolution across the study region.
A total of 536, 490, and 410 georeferenced surveys were identified for A. lumbricoides, hookworm, and T. trichiura, respectively. We estimate that 361 million people (95% Bayesian credible interval (BCI) 331-395 million), approximately one-quarter of the South Asia population, was infected with at least one soil-transmitted helminth species in 2015. A. lumbricoides was the predominant species. Moderate to high prevalence (>20%) of any soil-transmitted helminth infection was predicted in the northeastern part and some northern areas of the study region, as well as the southern coastal areas of India. The annual treatment needs for the school-age population requiring preventive chemotherapy was estimated at 165 million doses (95% BCI: 146-185 million).
Our risk maps provide an overview of the geographic distribution of soil-transmitted helminth infection in four mainland countries of South Asia and highlight the need for up-to-date surveys to accurately evaluate the disease burden in the region.</description><subject>Age</subject><subject>Ancylostomatoidea - isolation & purification</subject><subject>Animals</subject><subject>Ascariasis - parasitology</subject><subject>Ascaris lumbricoides - isolation & purification</subject><subject>Asia - epidemiology</subject><subject>At risk youth</subject><subject>Bangladesh - epidemiology</subject><subject>Bayes Theorem</subject><subject>Bayesian analysis</subject><subject>Biology and Life Sciences</subject><subject>Chemotherapy</subject><subject>Coastal zone</subject><subject>Control programs</subject><subject>Countries</subject><subject>Databases, Factual</subject><subject>Disease prevention</subject><subject>Disease transmission</subject><subject>Distribution</subject><subject>Environment models</subject><subject>Epidemiology</subject><subject>Geographical distribution</subject><subject>Geostatistics</subject><subject>Health risk assessment</subject><subject>Health risks</subject><subject>Helminthiasis</subject><subject>Helminthiasis - epidemiology</subject><subject>Helminths - isolation & purification</subject><subject>High resolution</subject><subject>Hookworm Infections - epidemiology</subject><subject>Humans</subject><subject>Hygiene</subject><subject>India - epidemiology</subject><subject>Infection</subject><subject>Infections</subject><subject>Mathematical models</subject><subject>Medical geography</subject><subject>Medical research</subject><subject>Medicine and Health Sciences</subject><subject>Methods</subject><subject>Nepal - epidemiology</subject><subject>Pakistan - epidemiology</subject><subject>People and Places</subject><subject>Polls & surveys</subject><subject>Prevalence</subject><subject>Prevalence studies (Epidemiology)</subject><subject>Probability theory</subject><subject>Profiles</subject><subject>Public health</subject><subject>Public health administration</subject><subject>Resolution</subject><subject>Resource allocation</subject><subject>Risk assessment</subject><subject>Risk Factors</subject><subject>Sanitation</subject><subject>Sentinel surveillance</subject><subject>Socioeconomic Factors</subject><subject>Soil</subject><subject>Soil - 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However, high-resolution risk profiles and the estimated number of people infected have yet to be determined. In turn, such information will assist control programs to identify priority areas for allocation of scarce resource for the control of soil-transmitted helminth infection.
We pursued a systematic review to identify prevalence surveys pertaining to soil-transmitted helminth infections in four mainland countries (i.e., Bangladesh, India, Nepal, and Pakistan) of South Asia. PubMed and ISI Web of Science were searched from inception to April 25, 2019, without restriction of language, study design, and survey date. We utilized Bayesian geostatistical models to identify environmental and socioeconomic predictors, and to estimate infection risk at high spatial resolution across the study region.
A total of 536, 490, and 410 georeferenced surveys were identified for A. lumbricoides, hookworm, and T. trichiura, respectively. We estimate that 361 million people (95% Bayesian credible interval (BCI) 331-395 million), approximately one-quarter of the South Asia population, was infected with at least one soil-transmitted helminth species in 2015. A. lumbricoides was the predominant species. Moderate to high prevalence (>20%) of any soil-transmitted helminth infection was predicted in the northeastern part and some northern areas of the study region, as well as the southern coastal areas of India. The annual treatment needs for the school-age population requiring preventive chemotherapy was estimated at 165 million doses (95% BCI: 146-185 million).
Our risk maps provide an overview of the geographic distribution of soil-transmitted helminth infection in four mainland countries of South Asia and highlight the need for up-to-date surveys to accurately evaluate the disease burden in the region.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>31398200</pmid><doi>10.1371/journal.pntd.0007580</doi><orcidid>https://orcid.org/0000-0002-4904-5352</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_plos_journals_2291477262 |
| source | MEDLINE; DOAJ Directory of Open Access Journals; PubMed Central Open Access; Public Library of Science (PLoS) Journals Open Access; EZB-FREE-00999 freely available EZB journals; PubMed Central |
| subjects | Age Ancylostomatoidea - isolation & purification Animals Ascariasis - parasitology Ascaris lumbricoides - isolation & purification Asia - epidemiology At risk youth Bangladesh - epidemiology Bayes Theorem Bayesian analysis Biology and Life Sciences Chemotherapy Coastal zone Control programs Countries Databases, Factual Disease prevention Disease transmission Distribution Environment models Epidemiology Geographical distribution Geostatistics Health risk assessment Health risks Helminthiasis Helminthiasis - epidemiology Helminths - isolation & purification High resolution Hookworm Infections - epidemiology Humans Hygiene India - epidemiology Infection Infections Mathematical models Medical geography Medical research Medicine and Health Sciences Methods Nepal - epidemiology Pakistan - epidemiology People and Places Polls & surveys Prevalence Prevalence studies (Epidemiology) Probability theory Profiles Public health Public health administration Resolution Resource allocation Risk assessment Risk Factors Sanitation Sentinel surveillance Socioeconomic Factors Soil Soil - parasitology Soils Spatial resolution Surveying Surveys Systematic review Technology application Trichuriasis - epidemiology Trichuris - isolation & purification Tropical diseases |
| title | Risk profiling of soil-transmitted helminth infection and estimated number of infected people in South Asia: A systematic review and Bayesian geostatistical Analysis |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-28T04%3A39%3A37IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Risk%20profiling%20of%20soil-transmitted%20helminth%20infection%20and%20estimated%20number%20of%20infected%20people%20in%20South%20Asia:%20A%20systematic%20review%20and%20Bayesian%20geostatistical%20Analysis&rft.jtitle=PLoS%20neglected%20tropical%20diseases&rft.au=Lai,%20Ying-Si&rft.date=2019-08-01&rft.volume=13&rft.issue=8&rft.spage=e0007580&rft.pages=e0007580-&rft.issn=1935-2735&rft.eissn=1935-2735&rft_id=info:doi/10.1371/journal.pntd.0007580&rft_dat=%3Cgale_plos_%3EA598979001%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2291477262&rft_id=info:pmid/31398200&rft_galeid=A598979001&rft_doaj_id=oai_doaj_org_article_5177ba85dd9f435aa847e4cb1e6eabdf&rfr_iscdi=true |