Evidence map›Paper›PMID 26011186›Full record

ArticleInfluenza and other respiratory viruses2016

Transmission dynamics of pandemic influenza A(H1N1)pdm09 virus in humans and swine in backyard farms in Tumbes, Peru.

Yeny O Tinoco, Joel M Montgomery, Mathew R Kasper, Martha I Nelson, Hugo Razuri, Maria C Guezala, Eduardo Azziz-Baumgartner, Marc-Alain Widdowson, John Barnes, Robert H Gilman and 2 more

Abstract read
In one paragraph

Article in Influenza and other respiratory viruses, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

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  5. Review of genome sequencing technologies in molecular characterization of influenza A viruses in swine.Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2022
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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

12 authors.

Yeny O TinocoU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Joel M MontgomeryU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Mathew R KasperU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Martha I NelsonFogarty International Center, National Institutes of Health, Bethesda, MD, USA.
Hugo RazuriU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Maria C GuezalaU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Eduardo Azziz-BaumgartnerU.S. Centers for Disease Control and Prevention, Atlanta, GA, USA.
Marc-Alain WiddowsonU.S. Centers for Disease Control and Prevention, Atlanta, GA, USA.
John BarnesU.S. Centers for Disease Control and Prevention, Atlanta, GA, USA.
Robert H GilmanJohns Hopkins School of Public Health, Baltimore, MD, USA.
Daniel G BauschU.S. Naval Medical Research Unit No. 6, Lima, Peru.
Armando E GonzalezSan Marcos University, Veterinary School, Lima, Peru.

Funding

Peru Infectious Diseases Epidemiology Research Training ConsortiumD43TW007393 · FIC · UNIVERSIDAD PERUANA CAYETANO HEREDIA · PI Andres G Lescano · 2005 to 2026
$5.9M
Training in Parasitic Diseases and Central Nervous System Infections in Peru.D43TW001140 · FIC · UNIVERSIDAD PERUANA CAYETANO HEREDIA · PI GARCIA, HECTOR HUGO, GILMAN, ROBERT H · 1999 to 2025
$5.7M
The Ecology, Emergence and Pandemic Potential of Nipah virus in BangladeshR01TW005869 · FIC · WILDLIFE TRUST · PI DASZAK, PETER · 2002 to 2012
$5.5M
Infectious Diseases Training Program in PeruD43TW006581 · FIC · JOHNS HOPKINS UNIVERSITY · PI GILMAN, ROBERT H · 2003 to 2012
$2.4M
Veterinarian Training in Zoonotic Diseases in Developing CountriesD43TW008273 · FIC · UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS · PI GONZALEZ, ARMANDO EMILIANO · 2009 to 2013
$1.1M
FIC NIH HHS 3R01-TW005869FIC NIH HHS D43 TW001140FIC NIH HHS D43-TW001140)002EFIC NIH HHS D43 TW006581FIC NIH HHS D43 TW007393FIC NIH HHS D43 TW008273FIC NIH HHS R01 TW005869Medical Research Council MR/K007467/1
6 · The paper itself

Abstract

objectivesWe aimed to determine the frequency of pH1N1 transmission between humans and swine on backyard farms in Tumbes, Peru.

designTwo-year serial cross-sectional study comprising four sampling periods: March 2009 (pre-pandemic), October 2009 (peak of the pandemic in Peru), April 2010 (1st post-pandemic period), and October 2011 (2nd post-pandemic period). SAMPLE: Backyard swine serum, tracheal swabs, and lung sample were collected during each sampling period.

main outcome measuresWe assessed current and past pH1N1 infection in swine through serological testing, virus culture, and RT-PCR and compared the results with human incidence data from a population-based active surveillance cohort study in Peru.

resultsAmong 1303 swine sampled, the antibody prevalence to pH1N1 was 0% pre-pandemic, 8% at the peak of the human pandemic (October 2009), and 24% in April 2010 and 1% in October 2011 (post-pandemic sampling periods). Trends in swine seropositivity paralleled those seen in humans in Tumbes. The pH1N1 virus was isolated from three pigs during the peak of the pandemic. Phylogenetic analysis revealed that these viruses likely represent two separate human-to-swine transmission events in backyard farm settings.

conclusionsOur findings suggest that human-to-swine pH1N1 transmission occurred during the pandemic among backyard farms in Peru, emphasizing the importance of interspecies transmission in backyard pig populations. Continued surveillance for influenza viruses in backyard farms is warranted.

Indexed as

AnimalsDisease Transmission, InfectiousHumansInfluenza A virusInfluenza, HumanMolecular Sequence DataOrthomyxoviridae InfectionsPeruPhylogenySus scrofaSwineSwine DiseasesAntibodiesbackyard pig farmshuman-animal transmissioninfluenza

Identifiers

PMID26011186
PMCPMC4687498

What OpenQuestion holds

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LicenceCC BY
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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.