Evidence map›Paper›PMID 22536366›Full record

ArticlePloS one2012

The influence of meteorology on the spread of influenza: survival analysis of an equine influenza (A/H3N8) outbreak.

Simon M Firestone, Naomi Cogger, Michael P Ward, Jenny-Ann L M L Toribio, Barbara J Moloney, Navneet K Dhand

Abstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
–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

22 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Short-term impact of ambient temperature on the incidence of influenza in Wuhan, China.Environmental science and pollution research international · 2022
    Article
  7. Equine Influenza.Cold Spring Harbor perspectives in medicine · 2022
    Review
  8. Article
  9. Associations between Temperature and Influenza Activity: A National Time Series Study in China.International journal of environmental research and public health · 2021
    Article
  10. Multi-Scale Airborne Infectious Disease Transmission.Applied and environmental microbiology · 2021
    Review
  11. Observational
  12. Review
  13. Article
  14. Could Environment Affect the Mutation of H1N1 Influenza Virus?International journal of environmental research and public health · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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.

Simon M FirestoneFaculty of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia. simon.firestone@sydney.edu.au
Naomi Cogger
Michael P Ward
Jenny-Ann L M L Toribio
Barbara J Moloney
Navneet K Dhand

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The influences of relative humidity and ambient temperature on the transmission of influenza A viruses have recently been established under controlled laboratory conditions. The interplay of meteorological factors during an actual influenza epidemic is less clear, and research into the contribution of wind to epidemic spread is scarce. By applying geostatistics and survival analysis to data from a large outbreak of equine influenza (A/H3N8), we quantified the association between hazard of infection and air temperature, relative humidity, rainfall, and wind velocity, whilst controlling for premises-level covariates. The pattern of disease spread in space and time was described using extraction mapping and instantaneous hazard curves. Meteorological conditions at each premises location were estimated by kriging daily meteorological data and analysed as time-lagged time-varying predictors using generalised Cox regression. Meteorological covariates time-lagged by three days were strongly associated with hazard of influenza infection, corresponding closely with the incubation period of equine influenza. Hazard of equine influenza infection was higher when relative humidity was <60% and lowest on days when daily maximum air temperature was 20-25°C. Wind speeds >30 km hour(-1) from the direction of nearby infected premises were associated with increased hazard of infection. Through combining detailed influenza outbreak and meteorological data, we provide empirical evidence for the underlying environmental mechanisms that influenced the local spread of an outbreak of influenza A. Our analysis supports, and extends, the findings of studies into influenza A transmission conducted under laboratory conditions. The relationships described are of direct importance for managing disease risk during influenza outbreaks in horses, and more generally, advance our understanding of the transmission of influenza A viruses under field conditions.

Indexed as

Disease OutbreaksInfluenza A Virus, H3N8 SubtypeAnimalsAustraliaContact TracingHorse DiseasesHorsesHumidityMultivariate AnalysisOrthomyxoviridae InfectionsProportional Hazards ModelsRainSurvival AnalysisWind

Identifiers

PMID22536366
PMCPMC3335077

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.