Figure 1.7 – Risk & Exposure Data

At a glance

Among the 2,265 case reports of hepatitis A received by CDC for 2022, data regarding risk behaviors or exposures were missing for 900 (40%) cases.
2022 Hepatitis A Surveillance

Availability of information regarding risk behaviors or exposures* associated with reported cases† of hepatitis A — United States, 2022

Figure 1.7 Data
Availability of information regarding risk behaviors or exposures* associated with reported cases† o...
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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.

† Reported confirmed cases. For the case definition, see Acute Hepatitis A.

Percentages may not total 100 due to rounding.

Summary

Among the 2,265 case reports of hepatitis A received by CDC for 2022, data regarding risk behaviors or exposures were missing for 900 (40%) cases. At least one risk behavior or exposure was reported for 512 (23%) cases during the 2–6 weeks before illness onset. More than one risk can be reported for each case. (See Table 1.3.)

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About Division of Viral Hepatitis
  • * 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 Acute Hepatitis A.
  • Percentages may not total 100 due to rounding.