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Australian Rotavirus Surveillance Program Annual Report, 2022
Celeste M Donato1,2,3, Susie Roczo-Farkas1, Sarah Thomas1
1Enteric Diseases, Murdoch Children's Research Institute, Parkville, Victoria.
Communicable Diseases Intelligence (2018)
|June 26, 2024
Summary
In 2022, Australia
Area of Science:
- Virology and Epidemiology
- Public Health Surveillance
Background:
- Rotavirus remains a significant cause of gastroenteritis in children globally.
- The Australian Rotavirus Surveillance Program monitors circulating strains and vaccine impact.
- The COVID-19 pandemic previously impacted sample submission rates.
Purpose of the Study:
- To characterize rotavirus G- and P- genotypes circulating in Australia in 2022.
- To assess the proportion of wildtype versus vaccine strains.
- To identify geographical variations and unusual genotypes.
Main Methods:
- Analysis of 1,379 faecal specimens referred for rotavirus G- and P- genotype analysis.
- Rotavirus confirmation and genotyping using molecular methods.
- Distinguishing between wildtype and Rotarix vaccine strains.
Main Results:
- A total of 1,276 rotavirus-positive specimens were analyzed.
- The dominant wildtype genotype was G12P[8] (28.2%), followed by G9P[4] (22.3%) and G2P[4] (20.3%).
- 155 specimens were identified as the Rotarix vaccine strain; unusual genotypes were also detected.
Conclusions:
- Rotavirus surveillance in 2022 showed a high number of samples and diverse genotypes.
- Geographical variations and outbreaks were noted, particularly in NSW, QLD, and NT.
- Continued surveillance is vital for tracking rotavirus evolution and vaccine effectiveness.
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