Availability of information regarding risk behaviors or exposures* associated with reported cases of Hepatitis A virus infection — United States, 2021
Source: CDC, National Notifiable Diseases Surveillance System.
* Case reports with at least one of the following risk behaviors/exposures reported 2–6 weeks prior to symptom onset or documented seroconversion if asymptomatic: 1) injection drug use; 2) sexual, household, or other contact; 3) men who have sex with men; 4) travel to hepatitis A-endemic region. Reported cases may include more than one risk behavior/exposure.
* Case reports with at least one of the following risk behaviors/exposures reported 2–6 weeks prior to symptom onset or documented seroconversion if asymptomatic: 1) injection drug use; 2) sexual, household, or other contact; 3) men who have sex with men; 4) travel to hepatitis A-endemic region. Reported cases may include more than one risk behavior/exposure.
Among the 5,728 case reports of hepatitis A received by CDC for 2021, data regarding risk behaviors or exposures were missing for 1,841 (32%) cases. At least one risk behavior or exposure was reported for 1,818 (32%) cases during the 2–6 weeks before illness onset. More than one risk can be reported for each case. (See Table 1.3.)
Hepatitis A Figures and Tables
- Figure 1.1. Number of reported cases of hepatitis A virus infection and estimated infections — United States, 2014–2021
- Figure 1.2. Rates of reported cases of hepatitis A virus infection, by state or jurisdiction — United States, 2020–2021
- Figure 1.3. Rates of reported cases of hepatitis A virus infection, by state or jurisdiction — United States, 2021
- Figure 1.4. Rates of reported cases of hepatitis A virus infection, by age group — United States, 2006–2021
- Figure 1.5. Rates of reported cases of hepatitis A virus infection, by sex — United States, 2006–2021
- Figure 1.6. Rates of reported cases of hepatitis A virus infection, by race/ethnicity — United States, 2006–2021
- Figure 1.7. Availability of information regarding risk behaviors or exposures associated with reported cases of hepatitis A virus infection — United States, 2021
- Table 1.1. Numbers and rates of reported cases of hepatitis A virus infection, by state or jurisdiction — United States, 2017–2021
- Table 1.2. Numbers and rates of reported cases of hepatitis A virus infection, by demographic characteristics — United States, 2017–2021
- Table 1.3. Reported risk behaviors or exposures among reported cases of hepatitis A virus infection — United States, 2021
- Table 1.4. Numbers and rates of deaths with hepatitis A virus infection listed as a cause of death among residents, by demographic characteristics — United States, 2017–2021