Table 2.3. Reported risk behaviors or exposures*† among reported cases of acute hepatitis B virus infection — United States, 2019
* Case reports with at least one of the following risk behaviors/exposures reported 6 weeks to 6 months prior to symptom onset or documented seroconversion if asymptomatic: 1) injection drug use; 2) multiple sexual partners; 3) underwent surgery; 4) men who have sex with men; 5) sexual contact with suspected/confirmed hepatitis C case; 6) sustained a percutaneous injury; 7) household contact with suspected/confirmed hepatitis B case; 8) occupational exposure to blood; 9) dialysis; and 10) transfusion.
† Risk behaviors/exposures data from one state was classified as ‘missing’ because of errors in reporting.
§ Cases with more than one type of contact reported were categorized according to a hierarchy: (1) sexual contact; (2) household contact (nonsexual).
¶ A total of 2,021 acute hepatitis B cases were reported among males in 2019.
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Health departments might conduct investigations of newly reported acute hepatitis B 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 3,192 case reports of acute hepatitis B received by CDC for 2019, data regarding risk behaviors and exposures were missing for 1,183 (37.1%) cases. At least one risk behavior or exposure was reported for 1,055 (33.1%) cases during the 6 weeks to 6 months before illness onset. More than one risk can be reported for each case.
Among risk behaviors and exposures identified, injection drug use was most commonly reported (35% of the 1,780 cases for which injection drug use information was available), followed by multiple sexual partners (23% of the 1,042 cases for which information regarding multiple sexual partners was available).
- Figure 2.1. Number of reported acute hepatitis B virus cases and estimated infections — United States, 2012–2019
- Figure 2.2. Rates of reported acute hepatitis B virus infection, by state — United States, 2018–2019
- Figure 2.3. Rates of reported acute hepatitis B virus infection, by state or jurisdiction — United States, 2019
- Figure 2.4. Rates of reported acute hepatitis B virus infection, by age group — United States, 2004–2019
- Figure 2.5. Rates of reported acute hepatitis B virus infection, by sex — United States, 2004–2019
- Figure 2.6. Rates of reported acute hepatitis B virus infections, by race/ethnicity — United States, 2004–2019
- Figure 2.7. Availability of information regarding risk behaviors or exposures associated with reported cases of acute hepatitis B virus infection — United States, 2019
- Figure 2.8. Rates of deaths with hepatitis B virus infection listed as a cause of death among residents, by jurisdiction — United States, 2019
- Table 2.1. Number and rates of reported cases of acute hepatitis B virus infection, by state or jurisdiction — United States, 2015–2019
- Table 2.2. Number and rates of reported cases of acute hepatitis B virus infection, by demographic characteristics — United States 2015–2019
- Table 2.3. Reported risk behaviors or exposures among reported cases of acute hepatitis B virus infection — United States, 2019
- Table 2.4. Number of newly reported cases of perinatal hepatitis B virus infection, by state or jurisdiction — United States, 2019
- Table 2.5. Number and rates of newly reported cases of chronic hepatitis B virus infection, by state or jurisdiction — United States, 2019
- Table 2.6. Number and rates of newly reported cases of chronic hepatitis B virus infection, by demographic characteristics — United States, 2019
- Table 2.7. Number and rates of deaths with hepatitis B virus infection listed as a cause of death among residents, by state or jurisdiction — United States, 2015–2019
- Table 2.8. Number and rates of deaths with hepatitis B virus infections listed as a cause of death among residents, by demographic characteristics — United States, 2015–2019