Evidence map›Paper›PMID 33407818›Full record

ArticleParasites & vectors2021

First identification and molecular subtyping of Blastocystis sp. in zoo animals in southwestern China.

Lei Deng, Jingxin Yao, Shanyu Chen, Tingmei He, Yijun Chai, Ziyao Zhou, Xiaogang Shi, Haifeng Liu, Zhijun Zhong, Hualin Fu and 1 more

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
6.7field-weighted citation impact, top 2% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. MultipleFood and waterborne parasitology · 2025
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  4. Veterinarni medicina · 2025
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  5. Article
  6. Genetic diversity of single-celled microorganismCurrent research in microbial sciences · 2025
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  7. Review
  8. A cross-sectional survey ofOne health (Amsterdam, Netherlands) · 2024
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  9. Effect ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2024
    Article
  10. Article
  11. Article
  12. Prevalence and subtypes ofFrontiers in veterinary science · 2024
    Article
  13. Article
  14. Article
  15. Molecular Identification and Genotyping ofAnimals : an open access journal from MDPI · 2023
    Article
  16. Article
  17. First description ofFrontiers in cellular and infection microbiology · 2023
    Article
  18. Article
  19. Molecular Epidemiology ofAnimals : an open access journal from MDPI · 2022
    Article
  20. 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

11 authors at 2 institutions in 1 country.

Lei Deng *The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Jingxin Yao *The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Shanyu Chen *The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Tingmei HeSichuan Wolong National Natural Reserve Administration, Aba, 623006, Sichuan, People's Republic of China.
Yijun ChaiThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Ziyao ZhouThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Xiaogang ShiSichuan Wolong National Natural Reserve Administration, Aba, 623006, Sichuan, People's Republic of China.
Haifeng LiuThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Zhijun ZhongThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Hualin FuThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
Guangneng PengThe Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China. pgn.sicau@163.com.ORCID http://orcid.org/0000-0002-9898-5754
Sichuan Agricultural University · CNFanjingshan National Nature Reserve · CN

Funding

Chengdu Giant Panda Breeding Research Foundation CPF2017-12Special Fund for Forestry Reform and Development of Wolong Special Administrative Region of Sichuan Province 510000-02-064387
6 · The paper itself

Abstract

backgroundBlastocystis sp. is an anaerobic protozoan that parasitizes many animal hosts and the human gastrointestinal tract, and its pathogenicity is controversial. Captive wildlife may be potential reservoirs for human infection with Blastocystis sp. The present study was performed to investigate the prevalence and subtype distribution of Blastocystis sp. in zoo animals in Sichuan Province, southwestern China.

methodsA total of 420 fresh fecal samples were collected from 54 captive wildlife species in four zoos in southwestern China between June 2017 and September 2019. The prevalence and subtype (ST) genetic characteristics of Blastocystis sp. were determined by PCR amplification of the barcode region of the SSU rRNA gene and phylogenetic analysis.

resultsOverall, 15.7% (66/420) of the animal samples and 20.7% (14/54) of the species tested were shown to be infected with Blastocystis sp. The highest prevalence of Blastocystis sp. was found in Panzhihua Zoo (24.3%), which was significantly higher than that in Chengdu Zoo (6.9%), and Xichang Zoo (2.9%) (P < 0.05). There are also significant differences in the prevalence of Blastocystis sp. among different species (P < 0.05), and the highest of Blastocystis sp. prevalence was observed in white-cheeked gibbon, black great squirrel, and red giant flying squirrel (100%). Subtype analysis of Blastocystis sp. revealed nine subtypes, including six zoonotic STs (ST1-5, and ST8) and three animal-specific STs (ST10, ST14, and ST17), with ST17 as the predominant subtype (26/66) in Blastocystis sp.-positive isolates.

conclusionsTo our knowledge, this is the first report on the prevalence and subtype distribution of Blastocystis sp. among captive wildlife in zoos in southwestern China. This study highlights that these animals may serve as reservoirs for human Blastocystis sp. infections.

Indexed as

BlastocystisAnimalsAnimals, WildAnimals, ZooBlastocystis InfectionsChinaDisease ReservoirsDNA, ProtozoanDNA, RibosomalFecesGenetic VariationHumansPhylogenyPrevalenceZoonosesDNA, ProtozoanDNA, RibosomalBlastocystis sp.Captive wildlifeChinaPhylogenetic analysisSubtypes

Identifiers

PMID33407818
PMCPMC7788908
OpenAlexW3119325740

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Registered trials

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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.