Evidence map›Paper›PMID 22970334›Full record

ArticlePLoS neglected tropical diseases2012

Molecular surveillance of Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi by genotyping and subtyping parasites in wastewater.

Na Li, Lihua Xiao, Lin Wang, Shuming Zhao, Xukun Zhao, Liping Duan, Meijin Guo, Lili Liu, Yaoyu Feng

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 1 pooled it
10.1field-weighted citation impact, top 1% 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

119 citing papers in PubMed, 1 synthesis or guideline pooled it, 213 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Prevalence and Multi-Locus Genotyping ofAnimals : an open access journal from MDPI · 2026
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  6. Molecular Characterization and Zoonotic Potential ofTransboundary and emerging diseases · 2026
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  7. Emergence ofMicroorganisms · 2025
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  8. PCR-based detection ofFrontiers in cellular and infection microbiology · 2025
    Article
  9. Article
  10. Occurrence and Genotypic Identification ofAnimals : an open access journal from MDPI · 2024
    Article
  11. Article
  12. Host-specificParasitology · 2024
    Article
  13. Article
  14. Article
  15. Simultaneous detection and quantification of multiple pathogen targets in wastewater.medRxiv : the preprint server for health sciences · 2023
    Article
  16. Article
  17. Article
  18. Exploring genetic variability ofFrontiers in microbiology · 2023
    Article
  19. Article
  20. Molecular Detection and Genotyping ofAnimals : an open access journal from MDPI · 2022
    Article

59 more citing papers are in PubMed but not listed here.

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.

Na LiState Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, People's Republic of China.
Lihua Xiao
Lin Wang
Shuming Zhao
Xukun Zhao
Liping Duan
Meijin Guo
Lili Liu
Yaoyu Feng
East China University of Science and Technology · CNCenters for Disease Control and Prevention · USArmy Medical University · CNNational Center for Emerging and Zoonotic Infectious Diseases · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite their wide occurrence, cryptosporidiosis and giardiasis are considered neglected diseases by the World Health Organization. The epidemiology of these diseases and microsporidiosis in humans in developing countries is poorly understood. The high concentration of pathogens in raw sewage makes the characterization of the transmission of these pathogens simple through the genotype and subtype analysis of a small number of samples. METHODOLOGY/PRINCIPAL

findingsThe distribution of genotypes and subtypes of Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi in 386 samples of combined sewer systems from Shanghai, Nanjing and Wuhan and the sewer system in Qingdao in China was determined using PCR-sequencing tools. Eimeria spp. were also genotyped to assess the contribution of domestic animals to Cryptosporidium spp., G. duodenalis, and E. bieneusi in wastewater. The high occurrence of Cryptosporidium spp. (56.2%), G. duodenalis (82.6%), E. bieneusi (87.6%), and Eimeria/Cyclospora (80.3%) made the source attribution possible. As expected, several human-pathogenic species/genotypes, including Cryptosporidium hominis, Cryptosporidium meleagridis, G. duodenalis sub-assemblage A-II, and E. bieneusi genotype D, were the dominant parasites in wastewater. In addition to humans, the common presence of Cryptosporidium spp. and Eimeria spp. from rodents indicated that rodents might have contributed to the occurrence of E. bieneusi genotype D in samples. Likewise, the finding of Eimeria spp. and Cryptosporidium baileyi from birds indicated that C. meleagridis might be of both human and bird origins. CONCLUSIONS/SIGNIFICANCE: The distribution of Cryptosporidium species, G. duodenalis genotypes and subtypes, and E. bieneusi genotypes in urban wastewater indicates that anthroponotic transmission appeared to be important in epidemiology of cryptosporidiosis, giardiasis, and microsporidiosis in the study areas. The finding of different distributions of subtypes between Shanghai and Wuhan was indicative of possible differences in the source of C. hominis among different areas in China.

Indexed as

AnimalsBiodiversityBirdsChinaCryptosporidiumCyclosporaDNA, FungalDNA, ProtozoanEimeriaEnterocytozoonGenotypeGiardia lambliaHumansMolecular Sequence DataPolymerase Chain ReactionRodentiaDNA, FungalDNA, ProtozoanWastewater

Identifiers

PMID22970334
PMCPMC3435239
OpenAlexW2038553755

What OpenQuestion holds

Textmetadata
LicenceCC0
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.