Genetic Diversity of PRRS Viruses in Thailand
Author Information
Author(s): Tun Hein M, Shi Mang, Wong Charles LY, Ayudhya Suparlark NN, Amonsin Alongkorn, Thanawonguwech Roongroje, Leung Frederick CC
Primary Institution: Chulalongkorn University, Bangkok, Thailand
Hypothesis
What is the genetic diversity and origin of porcine reproductive and respiratory syndrome viruses in Thailand?
Conclusion
The study found that PRRS viruses in Thailand originated from multiple introductions, leading to diverse variants co-circulating in major pig-producing provinces.
Supporting Evidence
- PRRSV has been circulating in Thailand since at least 1989.
- The study identified multiple independent introductions of both Type 1 and Type 2 PRRSV.
- Geographic co-circulation of diverse PRRSV variants was observed in three major provinces.
Takeaway
Scientists studied pig viruses in Thailand and found that different types came from various places, making it hard to control them.
Methodology
The study involved isolating viruses from nursery pigs, sequencing their genes, and performing phylogenetic analysis.
Potential Biases
Potential bias due to incomplete sampling and reliance on previously characterized sequences.
Limitations
The study's sampling was limited in both quantity and time span compared to North America.
Participant Demographics
Nursery pigs aged 3-8 weeks from various regions in Thailand.
Digital Object Identifier (DOI)
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