Evidence map›Paper›PMID 21461728›Full record

ArticleParasitology research2011

Molecular identification and distribution of Cryptosporidium and Giardia duodenalis in raw urban wastewater in Harbin, China.

Aiqin Liu, Hong Ji, Ensheng Wang, Jingbo Liu, Lihua Xiao, Yujuan Shen, Yihong Li, Weizhe Zhang, Hong Ling

Abstract read
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In one paragraph

Article in Parasitology research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
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  5. Detection ofMicroorganisms · 2022
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  12. Occurrence ofThe Korean journal of parasitology · 2017
    Article
  13. Article
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  15. The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2017
    Article
  16. Frontiers in microbiology · 2017
    Review
  17. Article
  18. Article
  19. 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

9 authors at 5 institutions in 2 countries.

Aiqin LiuDepartment of Parasitology, Harbin Medical University, Harbin, Heilongjiang 150081, China.
Hong Ji
Ensheng Wang
Jingbo Liu
Lihua Xiao
Yujuan Shen
Yihong Li
Weizhe Zhang
Hong Ling
Education Department of Heilongjiang Province · CNBeijing Drainage Group (China) · CNHarbin Medical University · CNCenters for Disease Control and Prevention · USNational Institute for Parasitic Diseases · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Contamination of the water supply by protozoa often causes outbreaks of cryptosporidiosis and giardiasis. The goals of the present study was to investigate the level of Cryptosporidium and Giardia duodenalis in wastewater from wastewater treatment plants in Harbin, China, and to understand the endemic transmission characteristics of cryptosporidiosis and giardiasis. Forty-eight domestic wastewater specimens from the two wastewater treatment plants in Harbin City were collected from April 2009 to March 2010. Cryptosporidium spp. and G. duodenalis assemblages were identified by PCR and sequencing of the 18S ribosomal RNA and the triosephosphate isomerase genes, respectively. In total, 15 wastewater specimens were PCR positive for Cryptosporidium and 23 were PCR positive for G. duodenalis. The prevalence of contamination with G. duodenalis (47.9%) was higher than that of Cryptosporidium (31.3%). Molecular identification showed the presence of two Cryptosporidium spp. (14 belonging to Cryptosporidium andersoni and one belonging to Cryptosporidium ubiquitum) and two G. duodenalis assemblages (18 belonging to assemblage AII and six belonging to assemblage B). In addition, eight specimens contained both Cryptosporidium and G. duodenalis, and one specimen contained G. duodenalis assemblages AII and B. These results suggested humans might be the primary source of G. duodenalis contamination in wastewater in the studied area. In contrast, a low prevalence of C. ubiquitum suggested a reduced risk of human cryptosporidiosis caused by C. ubiquitum via waterborne route. This work provides basic experimental data needed for local wastewater treatment plants to develop protective strategies for water safety and to eliminate waterborne parasites.

Indexed as

ChinaCluster AnalysisCryptosporidiumDNA, ProtozoanDNA, RibosomalGenes, rRNAGiardiaHumansMolecular Sequence DataPhylogenyPolymerase Chain ReactionRNA, ProtozoanRNA, Ribosomal, 18SSequence Analysis, DNAWaterWater PurificationDNA, ProtozoanDNA, RibosomalRNA, ProtozoanRNA, Ribosomal, 18SWater

Identifiers

PMID21461728
OpenAlexW2010378272

What OpenQuestion holds

Textmetadata
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.