ArticleTransboundary and emerging diseases2023
First Identification and Genomic Characterization of NADC34-Like PRRSV Strains Isolated from MLV-Vaccinated Pigs in Korea.
Article in Transboundary and emerging diseases, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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.
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.
Who cites it
12 citing papers in PubMed.
- Immunopathogenesis and pathological features of NADC34-like PRRSV infection in pregnant sows during late gestation.Veterinary research · 2026Article
- AI-Based Respiratory Monitoring-Guided Evaluation of Rottlerin Therapy for PRRS in Grower-Finisher Pig Farms.Viruses · 2026Article
- Nationwide emergence and spread of highly virulent PRRSV-2 mutants in Korea.Porcine health management · 2025Article
- The role of immune checkpoint molecules in PRRSV-2-induced immune modulation: insights from comparativeJournal of virology · 2025Article
- First detection of NADC34-like porcine reproductive and respiratory syndrome virus strains in Japan.The Journal of veterinary medical science · 2025Article
- Genetic and Pathogenic Characteristics of an Emerging Lineage 7 PRRSV-2 (Prime Pac-Like) Strain in China.Transboundary and emerging diseases · 2025Article
- Comparative Genomic and Biological Investigation of NADC30- and NADC34-Like PRRSV Strains Isolated in South Korea.Transboundary and emerging diseases · 2025Article
- Assessment of PRRSV and PCV2 seroprevalence and antigen prevalence in minipigs at laboratory-animal production facilities.Journal of advanced veterinary and animal research · 2024Article
- Genetic and Pathogenic Characteristics of an Emerging Highly Virulent Recombinant Lineage Korean Clade C PRRSV Strain.Transboundary and emerging diseases · 2024Article
- Pathogenic Characteristics of Five Different Lineage of Korean PRRSV-2 Isolates (NADC30-Like, VR2332-Like, LKA, LKB, and LKC).Transboundary and emerging diseases · 2024Article
- Circulating Lineage 3 Recombination with NADC30-Like and NADC34-LikeTransboundary and emerging diseases · 2024Article
- Molecular Characterization of Porcine Reproductive and Respiratory Syndrome Virus in Korea from 2018 to 2022.Pathogens (Basel, Switzerland) · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
NADC34-like porcine reproductive and respiratory syndrome viruses (PRRSVs) are emerging globally. Although lineage 1 PRRSVs are emerging in Korea, NADC34-like PRRSV strains have not been detected to date. This study reports the isolation of the first NADC34-like PRRSV strains from samples of MLV-vaccinated animals on a Korean farm with a severe PRRS outbreak causing high mortality and abortion rates in July 2022. Three PRRSV strains with a whole genome length of 15,088 bp were isolated from the outbreaks, and their phylogenetic, recombination properties, and in vitro growth kinetics were evaluated comprehensively. These Korean strains clustered with those of American and Chinese sublineage 1.5 (NADC34-like strains), according to phylogenetic analyses based on the ORF5 gene and the whole genome. All three complete genome sequences originated from recombination between the RespPRRS MLV and NADC34-like strains, according to recombination analysis. Full-length Nsp2 sequence alignment indicated that all three isolates had a continuous deletion in 100 aa, which was similar to that of the IA/2014/NADC34. Based on phylogenetic analysis and the Nsp2 deletion pattern, the isolates are identified as NADC34-like PRRSV. Growth kinetic analysis based on primary porcine alveolar macrophages (PAMs) and MARC-145 cells has revealed that Korean NADC34-like PRRSV strains had better replication ability in primary PAMs than other Korean lineage 1 viruses or the reference strain VR2332, implying higher pathogenicity in pigs. Considering the fact that NADC34-like PRRSV strains were detected in MLV-vaccinated animals on a farm in the area of the highest pig population density in Korea, additional vaccine failure cases and the spread of the virus could be detected in the near future. Collectively, these results aid in comprehending the current epidemic state of PRRSVs in Korea and highlight the need for continuous surveillance.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.