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Rotavirus gastroenteritis hospitalisations following introduction of vaccination, Canberra
Rosemary L David1, Martyn D Kirk2
1Medical Student, The Australian National University, Acton, Australian Capital Territory.
Insights
Rotavirus vaccination significantly reduced hospitalizations for children under 5 by 76% at The Canberra Hospital. The vaccine also showed an indirect protective effect, decreasing hospitalizations in unvaccinated children.
Area of Science:
- Pediatric infectious diseases
- Vaccinology
- Public health
Background:
- Rotavirus is a leading cause of severe gastroenteritis in young children globally.
- Vaccination is a key strategy to prevent rotavirus disease and its complications.
- Understanding the real-world impact of rotavirus vaccination programs is crucial for public health policy.
Purpose of the Study:
- To evaluate the effectiveness of rotavirus vaccination in reducing hospitalizations among children under 5 years of age.
- To assess the impact of rotavirus vaccination on seasonal hospitalization patterns.
- To determine if there was an indirect protective effect of the vaccine in the community.
Main Methods:
- A retrospective clinical audit of electronic medical records was conducted.
- Rotavirus hospitalizations in children under 5 were analyzed for pre-vaccine (2004-2006) and post-vaccine (2008-2012) periods.
- Data were confirmed with rotavirus pathology results and analyzed using statistical software.
Main Results:
- A 76% decrease in rotavirus hospitalizations was observed in the 5 years post-vaccine introduction compared to the pre-vaccine period.
- Seasonal peaks in hospitalizations were attenuated after vaccine implementation.
- The most significant reductions were seen in the 12-23 month (80%) and 24-35 month (88%) age groups.
- Hospitalizations decreased even in children unlikely to have been vaccinated, suggesting herd immunity.
Conclusions:
- Rotavirus vaccination led to substantial reductions in hospitalizations for rotavirus gastroenteritis in children under 5.
- The findings support the widespread use of rotavirus vaccines as an effective public health intervention.
- The observed indirect effect highlights the community-wide benefits of high vaccination coverage.
Objectives:
To determine the effect of rotavirus vaccination on rotavirus hospitalisations in children under 5 years of age at The Canberra Hospital, Australian Capital Territory.
Methods:
Rotavirus hospitalisations in children under 5 years of age at the Canberra Hospital were identified through a retrospective clinical audit of electronic medical hospitalisations in the pre-vaccine (2004-2006) and post-vaccine (2008-2012) periods. Records and confirmation with rotavirus pathology results were compared using MS Excel and Stata.
Results:
Laboratory confirmed rotavirus infections resulted in 289 children being admitted to the Canberra Hospital between January 2004 and December 2012. Hospitalisation for rotavirus gastroenteritis decreased by 76% in the 5 years following vaccine introduction compared with pre-vaccine periods. Seasonal patterns of hospitalisation were prominent in pre-vaccine periods but were attenuated post-vaccine. The greatest decreases in hospitalisation between pre- and post-vaccine periods were observed in the 12-23 (80%) and 24-35 (88%) month age categories. Decreases in hospitalisation were reported for patients unlikely to have received vaccine cover at that time, indicating an indirect protective effect of rotavirus vaccine.
Conclusions:
This study reports significant reductions in rotavirus hospitalisation of children under 5 years of age at The Canberra Hospital following vaccine introduction, mid-2007. These findings support rotavirus vaccination as an effective measure to reduce hospitalisation in children under 5 years of age.