Reduction in finisher pig death rate on a farm in Japan following use of a commercial killed vaccine against porcine reproductive and respiratory syndrome virus.

Yoriko Yonezawa, Tomohiro Nakagami, Nobuyuki Tsutsumi, Nozomu Momma, Osamu Taira, Ryota Matsuyama, Kohei Makita

Abstract read

In one paragraph

Article in The Journal of veterinary medical science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Yoriko YonezawaNisseiken Co., Ltd., Tokyo, Japan.

Tomohiro NakagamiInstitute for Field Crops and Livestock Hygiene, Aichi Prefectural Federation of Economic Agricultural Cooperative Associations, Aichi, Japan.

Nobuyuki TsutsumiNisseiken Co., Ltd., Tokyo, Japan.

Nozomu MommaNisseiken Co., Ltd., Tokyo, Japan.

Osamu TairaNippon Institute for Biological Science, Tokyo, Japan.

Ryota MatsuyamaVeterinary Epidemiology Unit, Graduate School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, Japan.

Kohei MakitaVeterinary Epidemiology Unit, Graduate School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PRRS (Porcine Reproductive and Respiratory Syndrome) is a costly disease in the global pig industry. In 2021, Nisseiken Co., Ltd. in Japan launched a PRRS-killed vaccine, PRRS-ME, but its effectiveness on reducing the death rate under field conditions remained unassessed. A longitudinal study on a PRRS-positive farm in Japan (July 2019-July 2022) evaluated its effect on death rates. Piglets on a PRRS-negative farrowing farm were vaccinated at 3 and 8 weeks of age in March 2021. The vaccinated piglets were introduced to the finisher farm, where a PRRS outbreak occurred. Vaccination coverage was not associated with the death rates of growers but was negatively associated with those of finishers. The predicted reduction in the death rate of finishers associated with complete vaccination coverage was 56.8%.

Indexed as

Porcine Reproductive and Respiratory SyndromePorcine respiratory and reproductive syndrome virusViral VaccinesAnimalsDisease OutbreaksFarmsJapanLongitudinal StudiesSwineVaccinationVaccines, InactivatedVaccines, InactivatedViral Vaccinesdeath ratekilled vaccineporcine reproductive and respiratory syndromeseasonalityvaccine effectiveness

Identifiers

PMID40691078

DOI10.1292/jvms.24-0506

PMCPMC12417739

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Textmetadata

LicenceCC BY-NC-ND

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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.