Evidence map›Paper›PMID 31208457›Full record

ArticleInfectious diseases of poverty2019

Change patterns of oncomelanid snail burden in areas within the Yangtze River drainage after the three gorges dam operated.

Si-Min Dai, Jeffrey Edwards, Zhou Guan, Shan Lv, Shi-Zhu Li, Li-Juan Zhang, Jun Feng, Ning Feng, Xiao-Nong Zhou, Jing Xu

Abstract read
In one paragraph

Article in Infectious diseases of poverty, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Identification of freshwater snail species and survey of their trematode infections in Ordos, China.International journal for parasitology. Parasites and wildlife · 2024
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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

10 authors.

Si-Min DaiNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Jeffrey EdwardsDepartment of Global Health, University of Washington, Seattle, Washington, USA.
Zhou GuanCenter of Disease Control and Prevention of Henan Province, 105 Nongyenan Road, Zhengzhou, 450016, Henan, China.
Shan LvNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Shi-Zhu LiNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Li-Juan ZhangNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Jun FengNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Ning FengCenter for Global Public Health, Chinese Center for Disease Control and Prevention, Room 211, 155 Changbai Road, Changping District, Beijing, 102206, China.
Xiao-Nong ZhouNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China.
Jing XuNational Institute of Parasitic Diseases Control and Prevention, Chinese Center for Disease Control and Prevention, 207 Ruijin Er Road, Shanghai, 200025, China. xfmjing@163.com.ORCID http://orcid.org/0000-0002-4620-2025

Funding

National Special Science and Technology Project for Major Infertious Diseases of China No.2018ZX10101002-002,2012ZX10004-220, 2016YFC1202000
6 · The paper itself

Abstract

backgroundAn "integrated control" strategy has been implemented within seven provinces at highest risk for schistosomiasis along Yangtze River in Peoples' Republic of China (P. R. China) since 2004. Since Oncomelania hupensis is the only intermediate host of the blood fluke (Schistosoma japonicum), controlling the distribution of snails is considered an essential and effective way to reduce the risk of schistosomiasis infection. The study aimed to determine the snail area burden and annual trend among provinces with potential risk for schistosomiasis along the Yangtze River, above and below the Three Gorges Dam (TGD).

methodsThis retrospective study utilized data previously collected from the National Parasitic Diseases Control Information Management System (NPDCIMS) on annual snail surveys from 2009 to 2017. Descriptive statistics were performed for analyzing the snail burden by provinces, counties, type of environmental location and year, and mapping was conducted to present the snails distribution.

resultsFrom 2009 to 2017, the total snail infested area decreased by 4.22%, from 372 253 hm

conclusionsThere has been a decline in total snail counts from 2009 to 2017. Meanwhile, new snail breeding areas were formed mainly within provinces downstream the TGD due to spread of snails, indicated that the oncomelanid snail would be difficult to completely eliminate. We suggest that the national schistosomiasis integrated control strategy, including mollusciding and environmental modification, will need to be enhanced significantly going forward to achieve a greater reduction in snail burden and ultimately to achieve elimination.

Indexed as

Animal DistributionAnimalsChinaRetrospective StudiesSchistosoma japonicumSeasonsSnailsChinaOncomelania hupensisOperational researchSchistosomiasisThree gorges damYangtze River

Identifiers

PMID31208457
PMCPMC6580481

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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.