Estimated Additional Number of Adults in HIV Care Who Have an Indication for Hepatitis A Vaccination Following 2020 US Guideline Update

Abstract

BACKGROUNDPeople with HIV (PWH) who contract hepatitis A may have higher level and prolonged hepatitis A viremia with an increased potential to transmit hepatitis A. 1,2 Many PWH have risk factors for which hepatitis A vaccination is recommended, including male-to-male sexual contact, injection and noninjection drug use, homelessness, and chronic liver disease. 3,4 However, in February 2020, the U.S. Advisory Committee on Immunization Practices (ACIP) recommended that all PWH age $ 1 year be routinely vaccinated for hepatitis A (https://www.cdc.gov/vaccines/schedules/index.html). The number of additional adults receiving HIV care who have an indication for vaccination based on the 2020 ACIP update is unknown and could inform public health practice and resource allocation. METHODSThe Medical Monitoring Project (MMP) is a population-based survey designed to produce nationally representative estimates of the behavioral and clinical characteristics of U.S. adults with diagnosed HIV. 5 In brief, the MMP uses a 2-stage sampling method in which, during the first stage, 16 states and 1 territory, including 6 separately funded metropolitan areas within selected states, were sampled from all states, the District of Columbia, and Puerto Rico. During the second stage, simple random samples of persons with diagnosed HIV age 18 years and older were drawn for each participating area from the National HIV Surveillance System, a census of persons with diagnosed HIV in the United States. Response rates were 100% (states and territory), 44% (persons, 2016 cycle), and 45%