Evidence map›Paper›PMID 21813841›Full record

ArticleThe American journal of tropical medicine and hygiene2011

Cryptosporidium meleagridis: infectivity in healthy adult volunteers.

Cynthia L Chappell, Pablo C Okhuysen, Rebecca C Langer-Curry, Donna E Akiyoshi, Giovanni Widmer, Saul Tzipori

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of tropical medicine and hygiene, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

19 citing papers in PubMed, 59 citations in OpenAlex.

  1. Review
  2. An Update on ZoonoticAnimals : an open access journal from MDPI · 2021
    Review
  3. Megasphaera in the Stool Microbiota Is Negatively Associated With Diarrheal Cryptosporidiosis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    Observational
  4. Article
  5. Article
  6. Opportunities and Challenges in Developing aACS infectious diseases · 2021
    Article
  7. Applied and environmental microbiology · 2021
    Review
  8. Prevalence and molecular characterization ofOne health (Amsterdam, Netherlands) · 2020
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Public health significance of zoonoticInternational journal for parasitology. Parasites and wildlife · 2016
    Review
  14. Article
  15. Cryptosporidium muris: infectivity and illness in healthy adult volunteers.The American journal of tropical medicine and hygiene · 2015
    Article
  16. Article
  17. Review
  18. Article
  19. Burden of disease from cryptosporidiosis.Current opinion in infectious diseases · 2012
    Review
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 3 institutions in 2 countries.

Cynthia L ChappellCenter for Infectious Diseases, The University of Texas Health Science Center, Houston, TX, USA. cynthia.l.chappell@uth.tmc.edu
Pablo C Okhuysen
Rebecca C Langer-Curry
Donna E Akiyoshi
Giovanni Widmer
Saul Tzipori
Tufts University · USThe University of Texas Health Science Center at Houston · USBayer (Germany) · DE

Funding

Zolmitriptan challenge and human performance testingM01RR002558 · NCRR · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI SCHULTZ, STANLEY G · 1985 to 2006
$10.3M
Genetics of Cryptosporidium parvumR01AI052781 · NIAID · TUFTS UNIVERSITY BOSTON · PI WIDMER, GIOVANNI · 2002 to 2010
$1.8M
Genetics of Cryptosporidium parvumR56AI052781 · NIAID · TUFTS UNIVERSITY BOSTON · PI WIDMER, GIOVANNI · 2008 to 2008
$293k
NCRR NIH HHS M01 RR002558NCRR NIH HHS RR-02558NIAID NIH HHS AI52781NIAID NIH HHS N01 AI025466NIAID NIH HHS N01-AI-25466NIAID NIH HHS R01 AI052781NIAID NIH HHS R56 AI052781
6 · The paper itself

Abstract

Most Cryptosporidium infections in humans are caused by C. parvum or C. hominis. However, genotyping techniques have identified infections caused by unusual Cryptosporidium species. Cryptosporidium meleagridis has been identified in ≤ 1% of persons with diarrhea, although prevalence is higher in developing nations. We examined the infectivity of C. meleagridis in healthy adults. Five volunteers were challenged with 10(5) C. meleagridis oocysts and monitored six weeks for fecal oocysts and clinical manifestations. Four volunteers had diarrhea; three had detectable fecal oocysts; and one infected volunteer remained asymptomatic. Fecal DNA from two volunteers was amplified by using a polymerase chain reaction specific for the Cryptosporidium small subunit ribosomal RNA gene. Nucleotide sequence of these amplicons was diagnostic for C. meleagridis. All infections were self-limited; oocysts were cleared within ≤ 12 days of challenge. These studies establish that healthy adults can be infected and become ill from ingestion of C. meleagridis oocysts.

Indexed as

AdultCryptosporidiosisCryptosporidiumDisease SusceptibilityHost-Parasite InteractionsHumansOocystsSpecies SpecificityYoung Adult

Identifiers

PMID21813841
PMCPMC3144819
OpenAlexW2104577326

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.