Evidence map›Paper›PMID 35333859›Full record

ArticlePLoS neglected tropical diseases2022

National mapping of schistosomiasis, soil-transmitted helminthiasis and anaemia in Yemen: Towards better national control and elimination.

Nur Alia Johari, Dhekra Amin Annuzaili, Hani Farouk El-Talabawy, Maryam Ba-Break, Abdulsalam M Al-Mekhlafi, Samira Al-Eryani, Abdulhakim Ali Alkohlani, Albis Francesco Gabrielli, Riadh Ben-Ismail, Sami Alhaidari and 8 more

Abstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. School-Based Epidemiology ofInfection and drug resistance · 2025
    Article
  5. Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors.

Nur Alia JohariSchistosomiasis Control Initiative Foundation, London, United Kingdom.ORCID 0000-0003-4874-3164
Dhekra Amin AnnuzailiSchistosomiasis Control Initiative Foundation, London, United Kingdom.ORCID 0000-0003-0149-1043
Hani Farouk El-TalabawyRegional Office for the Eastern Mediterranean, Department of Information, Evidence and Research, Department of Communicable Diseases, World Health Organization, Cairo, Egypt.
Maryam Ba-BreakNuffield Centre for International Health and Development, University of Leeds, Leeds, United Kingdom.
Abdulsalam M Al-MekhlafiDepartment of Parasitology, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen.
Samira Al-EryaniDepartment of Parasitology, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen.
Abdulhakim Ali AlkohlaniThe World Bank, Washington D.C, United States of America.
Albis Francesco GabrielliRegional Office for the Eastern Mediterranean, Department of Communicable Diseases, World Health Organization, Cairo, Egypt.
Riadh Ben-IsmailRegional Office for the Eastern Mediterranean, Department of Communicable Diseases, World Health Organization, Cairo, Egypt.
Sami AlhaidariThe National Schistosomiasis Control Programme (NSCP), Department of Primary Health Care, Ministry of Public Health and Population, Sana'a, Yemen.
Adel MuaydhThe National Schistosomiasis Control Programme (NSCP), Department of Primary Health Care, Ministry of Public Health and Population, Sana'a, Yemen.
Rasheed AlshamiThe National Schistosomiasis Control Programme (NSCP), Department of Primary Health Care, Ministry of Public Health and Population, Sana'a, Yemen.
Magid Al GunaidThe National Schistosomiasis Control Programme (NSCP), Department of Primary Health Care, Ministry of Public Health and Population, Sana'a, Yemen.ORCID 0000-0003-1531-4611
Alaa HamedThe World Bank, Washington D.C, United States of America.
Nehad KamelThe World Bank, Washington D.C, United States of America.
Karen PalacioThe End Fund, New York, New York, United States of America.ORCID 0000-0003-3036-3067
Fiona FlemingSchistosomiasis Control Initiative Foundation, London, United Kingdom.ORCID 0000-0002-3866-2232
Michael Duncan FrenchSchistosomiasis Control Initiative Foundation, London, United Kingdom.ORCID 0000-0002-9886-9980

Funding

World Health Organization 001
6 · The paper itself

Abstract

backgroundSchistosomiasis (SCH) and soil-transmitted helminthiasis (STH) are known to be endemic in Yemen. However, the distribution of both diseases had not previously been assessed by a well-structured national mapping study covering all governorates. The main aim of this study was, therefore, to map the prevalence of SCH and STH in Yemen in order to better inform implementation of effective national control and elimination interventions. The assessment of the distribution of anaemia was also included as a well-known consequence of infection with both SCH and STH. Secondarily, the study aimed to provide a broad indication of the impact of large-scale treatment on the distribution of infection. METHODOLOGY AND PRINCIPAL

findingsTo achive these aims, 80,432 children (10-14 years old) from 2,664 schools in 332 of Yemen's 333 districts were included, in 2014, into this national cross-sectional survey. Countrywide, 63.3% (210/332) and 75.6% (251/332) of districts were found to be endemic for SCH and STH respectively. More districts were affected by intestinal than urogenital SCH (54.2% and 31.6% respectively). SCH infection was mostly mild and moderate, with no districts reporting high infection. One quarter (24.4%) of Yemeni districts had high or moderate levels of Ascaris lumbricoides infection. Infection with Trichuris trichiura was the second most common STH (44.9% of districts infected) after A. lumbricoides (68.1%). Hookworm was the least prevalent STH (9.0%). Anaemia was prevalent in 96.4% of districts; it represented a severe public health problem (prevalence ≥ 40%) in 26.5% of districts, and a mild to moderate problem in two thirds of the districts (33.7% and 36.1% respectively).

conclusionThis study provided the first comprehensive mapping of SCH, STH, and anaemia across the country. This formed the basis for evaluating and continuing the national control and elimination programme for these neglected tropical diseases in Yemen.

Indexed as

AnemiaAscariasisHelminthiasisHelminthsSchistosomiasis haematobiaAdolescentAnimalsChildCross-Sectional StudiesFecesHumansNeglected DiseasesPrevalenceSoilYemenSoil

Identifiers

PMID35333859
PMCPMC8986123

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.