Key points
Among the 1,648 cases of hepatitis A reported during 2023, at least one risk behavior or exposure during the 2–6 weeks before illness onset was reported for 274 (17%) cases. No risk behavior/exposure was reported among 680 (41%) cases, and these data were missing for 694 (42%) cases.
Availability of information regarding risk behaviors or exposures* associated with reported cases† of hepatitis A — United States, 2023
Source: ob体育, 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.
† Reported confirmed cases. For the case definition, see .
Content Source:
About Division of Viral Hepatitis