Key result
Winter season links to ~58% higher norovirus detection in asymptomatic swine versus summer.
Why the study?
Few studies have reported genotype distributions and epidemiological features of caliciviruses in swine farms and their genetic relationship to human strains.
Population
533 pig faecal samples from six farms in central and southern Taiwan
Comparison
RT-PCR testing targeting conserved polymerase gene and partial capsid gene
Design
Cross-sectional study
Authors
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Supports winter swine surveillance for norovirus; leaves open zoonotic transmission risk to humans.
Cross-Sectional (n=533)
Yes
Absolute Event Rate: 41.7% vs 26.4%
p-value: p=<0.05
Multiple genotypes of human and porcine noroviruses asymptomatically infect swine in Taiwan, highlighting the need for monitoring to mitigate potential zoonotic transmission.
Chao et al. (2012) conducted a cross-sectional in Calicivirus infection (n=533). Winter season vs. Summer season was evaluated on Norovirus detection rate (p=<0.05). Norovirus detection in asymptomatic swine was significantly higher in winter (41.7%) compared to summer (26.4%, P<0.05), with multiple human and porcine genotypes identified.
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