Evidence map›Paper›PMID 31098727›Full record

ArticleParasitology research2019

Detection of Cryptosporidium and Giardia in the slaughterhouse, sewage and river waters of the Qinghai Tibetan plateau area (QTPA), China.

Liqing Ma, Xueyong Zhang, Yingna Jian, Xiuping Li, Geping Wang, Yong Hu, Panagiotis Karanis

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In one paragraph

Article in Parasitology research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

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

  1. Prevalence ofFrontiers in cellular and infection microbiology · 2021
    Pooled it
  2. Food and waterborne parasitology · 2026
    Article
  3. Epidemiological Exploration ofVeterinary sciences · 2025
    Article
  4. Current research in parasitology & vector-borne diseases · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Gut Fungal Microbiome Responses to NaturalFrontiers in microbiology · 2022
    Article
  12. Review
  13. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Liqing MaQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Xueyong ZhangQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Yingna JianQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Xiuping LiQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Geping WangQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Yong HuQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China.
Panagiotis KaranisQinghai Academy of Animal Sciences and Veterinary Medicine, Centre for Biomedicine and Infectious Diseases, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining, 810016, People's Republic of China. panagiotis.karanis@uk-koeln.de.ORCID http://orcid.org/0000-0002-0733-0470

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The occurrence of Cryptosporidium and Giardia species in slaughter, sewage and river waters of the Qinghai Tibetan Plateau Area (QTPA), China, was investigated. A total of 456 samples were collected from different locations in the QTPA to study the contamination rates of Cryptosporidium spp. and Giardia via PCR and subsequent sequence analysis. Ten samples were Cryptosporidium positive, and 97 were Giardia positive, as confirmed by PCR amplification of the SSU rRNA gene. The percentages of positive Cryptosporidium and Giardia detection were 2.2% (10/456) and 21.3% (97/456), respectively. Cryptosporidium was detected in only sewage and river waters. Six species of Cryptosporidium were identified: Cryptosporidium hominis (n = 5), C. andersoni (n = 1), C. environmental (n = 1), C. struthionis (n = 1), C. canis (n = 1), and C. parvum (n = 1). G. duodenalis assemblage A was identified in almost all positive samples (n = 96), and one sample harboured G. duodenalis assemblage E. The results suggest that Cryptosporidium and Giardia species circulate through the aqueous environment and different hosts. Therefore, we strongly recommend that the local government and health authorities in China undertake control measures to reduce the contamination of water sources by these protozoa to protect the health of humans and animals.

Indexed as

AbattoirsAnimalsCryptosporidiosisCryptosporidiumFecesGiardiaGiardiasisHumansRiversSewageTibetWaterSewageWaterChinaCryptosporidiumGiardiaNested PCRQinghai-Tibet plateau areaRiver waterSewage waterSlaughterhouse water

Identifiers

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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.