Evidence map›Paper›PMID 26691531›Full record

Trial reportPloS one2015

Genetic Diversity of Cryptosporidium in Children in an Urban Informal Settlement of Nairobi, Kenya.

Cecilia Mbae, Erastus Mulinge, Anthony Waruru, Benjamin Ngugi, James Wainaina, Samuel Kariuki

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Genotypic characterization ofFood and waterborne parasitology · 2025
    Article
  4. Prevalence and Molecular Characterization ofPathogens (Basel, Switzerland) · 2025
    Article
  5. Article
  6. Article
  7. Genetic diversity ofCurrent research in parasitology & vector-borne diseases · 2025
    Article
  8. Molecular characterization and zoonotic risk assessment ofOne health (Amsterdam, Netherlands) · 2024
    Article
  9. Genetic diversity ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2022
    Article
  10. Transmission of Cryptosporidium Species Among Human and Animal Local Contact Networks in Sub-Saharan Africa: A Multicountry Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    Article
  11. Molecular Characterisation ofPathogens (Basel, Switzerland) · 2021
    Article
  12. Review
  13. Frontiers in veterinary science · 2020
    Review
  14. Observational
  15. Pathogens transmitted in animal feces in low- and middle-income countries.International journal of hygiene and environmental health · 2018
    Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Prevalence ofBioMed research international · 2017
    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

6 authors at 2 institutions in 1 country.

Cecilia MbaeCentre for Microbiological Research, Kenya Medical Research Institute, Nairobi, Kenya.
Erastus MulingeCentre for Microbiological Research, Kenya Medical Research Institute, Nairobi, Kenya.
Anthony WaruruKenya Medical Research Institute, Nairobi, Kenya.
Benjamin NgugiCentre for Microbiological Research, Kenya Medical Research Institute, Nairobi, Kenya.
James WainainaBioscience eastern and central Africa, International Livestock Research Institute, Nairobi, Kenya.
Samuel KariukiCentre for Microbiological Research, Kenya Medical Research Institute, Nairobi, Kenya.
Kenya Medical Research Institute · KEInternational Livestock Research Institute · KE

Funding

Wellcome TrustWellcome Trust 084538
6 · The paper itself

Abstract

introductionGlobally Cryptosporidium and Giardia species are the most common non-bacterial causes of diarrhoea in children and HIV infected individuals, yet data on their role in paediatric diarrhoea in Kenya remains scant. This study investigated the occurrence of Cryptosporidium species, genotypes and subtypes in children, both hospitalized and living in an informal settlement in Nairobi.

methodsThis was a prospective cross-sectional study in which faecal specimen positive for Cryptosporidium spp. by microscopy from HIV infected and uninfected children aged five years and below presenting with diarrhoea at selected outpatient clinics in Mukuru informal settlements, or admitted to the paediatric ward at the Mbagathi District Hospital were characterized. The analysis was done by Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) of the 18srRNA gene for species identification and PCR-sequencing of the 60 kDa glycoprotein (GP60) gene for subtyping.

resultsC. hominis was the most common species of Cryptosporidium identified in125/151(82.8%) of the children. Other species identified were C. parvum 18/151(11.9%), while C. felis and C. meleagridis were identified in 4 and 2 children, respectively. Wide genetic variation was observed within C. hominis, with identification of 5 subtype families; Ia, Ib, Id, Ie and If and 21 subtypes. Only subtype family IIc was identified within C. parvum. There was no association between species and HIV status or patient type.

conclusionC. hominis is the most common species associated with diarrhoea in the study population. There was high genetic variability in the C. hominis isolates with 22 different subtypes identified, whereas genetic diversity was low within C. parvum with only one subtype family IIc identified.

Indexed as

Polymorphism, Restriction Fragment LengthUrban PopulationAnimalsBase SequenceChild, PreschoolCryptosporidiosisCryptosporidiumFemaleHIV InfectionsHumansInfantInfant, NewbornKenyaMaleMolecular Sequence DataProtozoan ProteinsProtozoan ProteinsRNA, ProtozoanRNA, Ribosomal, 18S

Identifiers

PMID26691531
PMCPMC4687032
OpenAlexW2228403869

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.