Conclusion Analyzing four years of hepatitis A data (2019–2022), which includes the period of the large-scale outbreak in 2019, revealed a clear trend: individuals in their 40s were most affected by hepatitis A infection, followed by those in their 30s and 20s.
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[Surveillance of Hepatitis A Virus and Its Outbreak Status in the Republic of Korea, 2019 to 2022].
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