Evidence map›Paper›PMID 34146447›Full record

ArticleTransboundary and emerging diseases2021

The impact of African swine fever virus on smallholder village pig production: An outbreak investigation in Lao PDR.

Nina Matsumoto, Jarunee Siengsanan-Lamont, Tariq Halasa, James R Young, Michael P Ward, Bounlom Douangngeun, Watthana Theppangna, Syseng Khounsy, Jenny-Ann L M L Toribio, Russell D Bush and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Transboundary and emerging diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 33 citations in OpenAlex.

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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

11 authors at 4 institutions in 6 countries.

Nina MatsumotoSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
Jarunee Siengsanan-LamontMahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Tariq HalasaSection of Animal welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark.ORCID https://orcid.org/0000-0003-1112-0254
James R YoungSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
Michael P WardSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.ORCID https://orcid.org/0000-0002-9921-4986
Bounlom DouangngeunSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
Watthana TheppangnaNational Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao People's Democratic Republic.
Syseng KhounsySection of Animal welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark.
Jenny-Ann L M L ToribioSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
Russell D BushSydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.
Stuart D BlacksellMahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.ORCID https://orcid.org/0000-0001-6576-726X
The University of Sydney · AUMahidol University · THUniversity of Copenhagen · DKMinistry of Agriculture and Forestry · LA

Funding

Biological Threat Reduction Program (BTRP)Crawford FundDefense Threat Reduction Agency HDTRA1-08-D-0007Wellcome TrustWellcome Trust 106698/Z/14/ZWellcome Trust 220211
6 · The paper itself

Abstract

African swine fever virus (ASFV) causes a deadly disease of pigs which spread through southeast Asia in 2019. We investigated one of the first outbreaks of ASFV in Lao People's Democratic Republic amongst smallholder villages of Thapangtong District, Savannakhet Province. In this study, two ASFV affected villages were compared to two unaffected villages. Evidence of ASFV-like clinical signs appeared in pig herds as early as May 2019, with median epidemic days on 1 and 18 June in the two villages, respectively. Using participatory epidemiology mapping techniques, we found statistically significant spatial clustering in both outbreaks (p < 0.001). Villagers reported known risk factors for ASFV transmission - such as free-ranging management systems and wild boar access - in all four villages. The villagers reported increased pig trader activity from Vietnam before the outbreaks; however, the survey did not determine a single outbreak source. The outbreak caused substantial household financial losses with an average of nine pigs lost to the disease, and Monte Carlo analysis estimated this to be USD 215 per household. ASFV poses a significant threat to food and financial security in smallholder communities such as Thapangtong, where 40.6% of the district's population are affected by poverty. This study shows ASFV management in the region will require increased local government resources, knowledge of informal trader activity and wild boar monitoring alongside education and support to address intra-village risk factors such as free-ranging, incorrect waste disposal and swill feeding.

Indexed as

African Swine FeverAfrican Swine Fever VirusSwine DiseasesAnimalsDisease OutbreaksLaosSus scrofaSwineVietnamAfrican swine feveranimal health economicsLao PDRpig productionsmallholdervillage

Identifiers

PMID34146447
PMCPMC9292446
OpenAlexW3128035414

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.