Evidence map›Paper›PMID 24962624›Full record

ArticleParasites & vectors2014

Schistosoma haematobium detection in snails by DraI PCR and Sh110/Sm-Sl PCR: further evidence of the interruption of schistosomiasis transmission in Morocco.

Fatima Amarir, Faiza Sebti, Ibrahim Abbasi, Abderrahim Sadak, Hajiba Fellah, Haddou Nhammi, Btissam Ameur, Abderrahman Laamrani El Idrissi, Mohamed Rhajaoui

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
1.7field-weighted citation impact, top 18% of its field
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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Assessment of schistosomiasis transmission in the River Nile at Greater Cairo using malacological surveys and cercariometry.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2022
    Article
  4. Article
  5. Schistosomiasis with a Focus on Africa.Tropical medicine and infectious disease · 2021
    Review
  6. Article
  7. Transmission sites forHeliyon · 2021
    Article
  8. Article
  9. Review
  10. Article
  11. Review of the Urinary Schistosomiasis Control in Morocco (1960-2018).Interdisciplinary perspectives on infectious diseases · 2020
    Article
  12. Article
  13. DNA Diagnostics for Schistosomiasis Control.Tropical medicine and infectious disease · 2018
    Review
  14. Review
  15. Article
  16. Review
  17. Advances in the Diagnosis of Human Schistosomiasis.Clinical microbiology reviews · 2015
    Review
  18. 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

9 authors at 4 institutions in 2 countries.

Fatima AmarirLaboratory of Parasitology, Department of Parasitology, National Institute of Hygiene, Agdal, Rabat, Morocco. Fatima_inh@yahoo.fr.
Faiza Sebti
Ibrahim Abbasi
Abderrahim Sadak
Hajiba Fellah
Haddou Nhammi
Btissam Ameur
Abderrahman Laamrani El Idrissi
Mohamed Rhajaoui
Institut National d'Hygiène du Maroc · MAMinistère de la Santé · MAAl-Quds University · PSMohammed V University · MA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis is the first study in Morocco to estimate snail infection rates at the last historic transmission sites of schistosomiasis, known to be free from new infection among humans since 2004. Screening of large numbers of snails for infection is one way to confirm that Schistosoma haematobium transmission has stopped and does not resurge.

methodsA total of 2703 Bulinus truncatus snails were collected from 24 snail habitats in five provinces of Morocco: Errachidia, El Kelaa des Sraghna, Tata, Beni Mellal, and Chtouka Ait Baha. All visible snails were collected with a scoop net or by hand. We used waders and gloves as simple precautions. Snails were morphologically identified according to Moroccan Health Ministry guide of schistosomiasis (1982).All snails were analyzed in pools by molecular tool, using primers from the newly identified repeated DNA sequence, termed DraI, in the S. haematobium group. To distinguish S. bovis and S. haematobium, the snails were analyzed by Sh110/Sm-Sl PCR that was specific of S. haematobium.

resultsThe results showed that snails from Errachidia, Chtouka Ait Baha, sector of Agoujgal in Tata and sector of Mbarkiya in El kelaa des Sraghna were negative for DraI PCR; but, snails from remaining snail habitats of El Kelaa des Sraghna, Tata and Beni Mellal were positive. This led to suggest the presence of circulating schistosome species (S. haematobium, S. bovis or others) within these positive snail habitats. Subsequently, confirmation with S. haematobium species specific molecular assay, Sh110/Sm-Sl PCR, showed that none of the collected snails were infected by S. haematobium in all historic endemic areas.

conclusionThe absence of S. haematobium infection in snails supports the argument of S. haematobium transmission interruption in Morocco.

Indexed as

AnimalsMoroccoPolymerase Chain ReactionSchistosoma haematobiumSchistosomiasis haematobiaSensitivity and SpecificitySnails

Identifiers

PMID24962624
PMCPMC4101796
OpenAlexW2126145533

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.