Rates^* of reported hepatitis A virus infection^¶, by age group, United States, 2007 to 2022

Since 2007, the rates of hepatitis A decreased in all age groups and remained constant until outbreaks of hepatitis A began to be reported during 2016. The substantial increase in the rates of hepatitis A observed during 2017 to 2019 was apparent in almost all age groups. The exception was for persons aged less than 20 years, which is due to the introduction of the hepatitis A vaccine in 1996 and universal childhood vaccination recommendation in 2006. In 2022, the rate of reported cases of hepatitis A decreased in all age groups compared with 2021. In 2022, the highest rate occurred among persons aged 30 to 39 years (1.5 per 100,000 population).