Figure 1.7. Availability of information regarding risk behaviors or exposures*† associated with reported cases of hepatitis A virus infection — United States, 2019
Source: CDC, Nationally Notifiable Diseases Surveillance System.
* Case reports with at least one of the following risk behavior/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.
† Risk behaviors/exposures data from one state was classified as ‘missing’ because of errors in reporting.
* Case reports with at least one of the following risk behavior/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.
† Risk behaviors/exposures data from one state was classified as ‘missing’ because of errors in reporting.
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See Table 1.3 for more risk behavior/exposure data.
Health departments might conduct investigations of newly reported hepatitis A cases to ascertain risk behaviors and exposures associated with infection. However, investigations might not be possible for all cases if patients are lost to follow-up or if health departments lack adequate resources for investigating all cases reported in their jurisdiction. Among the 18,846 case reports of hepatitis A received by CDC for 2019, data regarding risk behaviors or exposures were missing for 6,191 (32.9%) cases. At least one risk behavior or exposure was reported for 6,635 (32.5%) cases during the 2–6 weeks before illness onset.
Hepatitis A Figures and Tables
- Figure 1.1. Number of reported hepatitis A virus infection cases and estimated infections — United States, 2012–2019
- Figure 1.2. Rates of reported hepatitis A virus infection, by state or jurisdiction — United States, 2018–2019
- Figure 1.3. Rates of reported hepatitis A virus infection, by state or jurisdiction — United States, 2019
- Figure 1.4. Rates of reported hepatitis A virus infection, by age group — United States, 2004–2019
- Figure 1.5. Rates of reported hepatitis A virus infection, by sex — United States, 2004–2019
- Figure 1.6. Rates of reported hepatitis A virus infection, by race/ethnicity — United States, 2004–2019
- Figure 1.7. Availability of information regarding risk behaviors or exposures associated with reported cases of hepatitis A virus infection — United States, 2019
- Table 1.1. Number and rates of reported cases of hepatitis A virus infection, by state or jurisdiction — United States, 2015–2019
- Table 1.2. Number and rates of reported cases of hepatitis A virus infection, by demographic characteristics — United States 2015–2019
- Table 1.3. Reported risk behaviors or exposures among reported cases of hepatitis A virus infection — United States, 2019
- Table 1.4. Number and rates of deaths with hepatitis A virus infection listed as a cause of death among residents, by demographic characteristics — United States, 2015–2019
Page last reviewed: May 14, 2021