1. World Health Organization. Hepatitis A. World Health Organization; 2022. https://www.who.int/teams/health-product-policy-and-standards/standards-and-specifications/vaccine-standardization/hep-a. Accessed 30 May 2023
2. Centers for disease control and prevention. 2020: reported hepatitis A cases and estimated infections. CDC; 2022. https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-a/figure-1.1.htm. Accessed 30 May 2023
3. Ly KN, Klevens RM. Trends in disease and complications of hepatitis A virus infection in the United States, 1999–2011: A New Concern for Adults. J Infect Dis. 2015;212(2):176–82. https://doi.org/10.1093/infdis/jiu834.
4. Adult immunization schedule – Healthcare providers. CDC; n.d. https://www.cdc.gov/vaccines/schedules/hcp/imz/adult.html#note-hepa. Accessed 30 May 2023
5. WHO. Hepatitis A. World Health Organization (WHO); 2022. https://www.who.int/news-room/fact-sheets/detail/hepatitis-a. Accessed 30 May 2023