Evidence map›Paper›PMID 24377436›Full record

ArticleEmerging infectious diseases2014

Effects of drinking-water filtration on Cryptosporidium seroepidemiology, Scotland.

Colin N Ramsay, Adam P Wagner, Chris Robertson, Huw V Smith, Kevin G J Pollock

Abstract read
In one paragraph

Article in Emerging infectious diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–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

4 citing papers in PubMed.

  1. Current research in parasitology & vector-borne diseases · 2025
    Review
  2. Molecular Identification of ProtozoanLife (Basel, Switzerland) · 2022
    Article
  3. Review
  4. Frontiers in veterinary science · 2020
    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

5 authors.

Colin N Ramsay
Adam P Wagner
Chris Robertson
Huw V Smith
Kevin G J Pollock

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Continuous exposure to low levels of Cryptosporidium oocysts is associated with production of protective antibodies. We investigated prevalence of antibodies against the 27-kDa Cryptosporidium oocyst antigen among blood donors in 2 areas of Scotland supplied by drinking water from different sources with different filtration standards: Glasgow (not filtered) and Dundee (filtered). During 2006-2009, seroprevalence and risk factor data were collected; this period includes 2007, when enhanced filtration was introduced to the Glasgow supply. A serologic response to the 27-kDa antigen was found for ≈75% of donors in the 2 cohorts combined. Mixed regression modeling indicated a 32% step-change reduction in seroprevalence of antibodies against Cryptosporidium among persons in the Glasgow area, which was associated with introduction of enhanced filtration treatment. Removal of Cryptosporidium oocysts from water reduces the risk for waterborne exposure, sporadic infections, and outbreaks. Paradoxically, however, oocyst removal might lower immunity and increase the risk for infection from other sources.

Indexed as

Water MicrobiologyWater PurificationCryptosporidiosisCryptosporidiumHumansParasite LoadPrevalenceRisk FactorsScotlandSeasonsSeroepidemiologic StudiesSerotypingSurveys and QuestionnairesbacteriacryptosporidiosisCryptosporidiumdrinking waterfiltrationfresh waterScotlandseroepidemiology

Identifiers

PMID24377436
PMCPMC3884704

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.