Evidence map›Paper›PMID 21501896›Full record

ArticleThe Journal of hospital infection2011

Seroprevalence of antibody to pandemic influenza A (H1N1) 2009 among healthcare workers after the first wave in Hong Kong.

Y Zhou, D M W Ng, W-H Seto, D K M Ip, H K H Kwok, E S K Ma, S Ng, L L H Lau, J T Wu, J S M Peiris and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of hospital infection, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Pandemic influenza A(H1N1)pdm09: risk of infection in primary healthcare workers.The British journal of general practice : the journal of the Royal College of General Practitioners · 2013
    Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Clinical and nonclinical health care workers faced a similar risk of acquiring 2009 pandemic H1N1 infection.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2011
    Article
  12. 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

11 authors at 2 institutions in 2 countries.

Y ZhouInfectious Disease Epidemiology Group, School of Public Health, The University of Hong Kong, Hong Kong Special Administrative Region, China.
D M W Ng
W-H Seto
D K M Ip
H K H Kwok
E S K Ma
S Ng
L L H Lau
J T Wu
J S M Peiris
B J Cowling
University of Hong Kong · HKHospital Authority · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

During the first wave of an influenza pandemic prior to the availability of an effective vaccine, healthcare workers (HCWs) may be at particular risk of infection with the novel influenza strain. We conducted a cross-sectional study of the prevalence of antibody to pandemic influenza A (H1N1) 2009 (pH1N1) among HCWs in Hong Kong in February-March 2010 following the first pandemic wave. Sera collected from HCWs were tested for antibody to pH1N1 influenza virus by viral neutralisation (VN). We assessed factors associated with higher antibody titres, and we compared antibody titres in HCWs with those in a separate community study. In total we enrolled 703 HCWs. Among 599 HCWs who did not report receipt of pH1N1 vaccine, 12% had antibody titre ≥1:40 by VN. There were no significant differences in the age-specific proportions of unvaccinated HCWs with antibody titre ≥1:40 compared with the general community following the first wave of pH1N1. Under good adherence to infection control guidelines, potential occupational exposures in the hospital setting did not appear to be associated with any substantial excess risk of pH1N1 infection in HCWs. Most HCWs had low antibody titres following the first pandemic wave.

Indexed as

Health PersonnelAdultAntibodies, ViralCross-Sectional StudiesFemaleHong KongHumansInfluenza A Virus, H1N1 SubtypeInfluenza, HumanMaleMiddle AgedOccupational ExposureRisk FactorsSeroepidemiologic StudiesAntibodies, Viral

Identifiers

PMID21501896
PMCPMC7132483
OpenAlexW2077491285

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.