Bruggink Leesa D, Thorley Bruce
Senior Medical Scientist, Enteric Virus Laboratory, Victorian Infectious Diseases Reference Laboratory (VIDRL), Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity.
Head of the Enteric Virus Laboratory, Victorian Infectious Diseases Reference Laboratory (VIDRL), Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity.
Commun Dis Intell (2018). 2024 Jul 17;48. doi: 10.33321/cdi.2024.48.29.
There were 108 norovirus-positive outbreaks in 2022, with 45 (41.7%) occurring during the first quarter (Q1), January-March. Aged care facilities accounted for 44.4% of norovirus-positive outbreaks; 43.5% were in childcare settings. Overall, the GII.P31/GII.4 genotype was the most common, involved in 39.4% of outbreaks; however, there were shifts in the most common genotype across the year. In Q1, the GII.P31/GII.4 genotype accounted for 73.3% of typed outbreaks, but by Q3 (July-September) the GII.P7/GII.6 was the most prominent genotype at 45.0%. In Q4 (October-December), the dominant genotype had changed again to GII.P16/GII.4 (52.6%). While the incidence of norovirus outbreaks in 2022 was average regarding overall prevalence and genotype diversity, there are still ongoing effects from the coronavirus disease 2019 (COVID-19) pandemic in relation to seasonality, outbreak demographics and specimen referral.
2022年共有108起诺如病毒阳性疫情，其中45起（41.7%）发生在第一季度（1月至3月）。老年护理机构占诺如病毒阳性疫情的44.4%；43.5%发生在儿童保育场所。总体而言，GII.P31/GII.4基因型最为常见，占疫情的39.4%；然而，全年最常见的基因型有所变化。在第一季度，GII.P31/GII.4基因型占分型疫情的73.3%，但到第三季度（7月至9月），GII.P7/GII.6成为最突出的基因型，占45.0%。在第四季度（10月至12月），优势基因型再次变为GII.P16/GII.4（52.6%）。虽然2022年诺如病毒疫情的发病率在总体流行率和基因型多样性方面处于平均水平，但2019冠状病毒病（COVID-19）大流行在季节性、疫情人口统计学和样本送检方面仍有持续影响。
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