Numbers and rates* of reported cases of acute Hepatitis B and acute Hepatitis C infections? among adults aged 18¨C40 years old, by demographic characteristics ¡ª United States, 2021

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Numbers and rates* of reported cases of acute Hepatitis B and acute Hepatitis C infections† among adults aged 18-40 years old, by demographic characteristics — United States 2021
The number of reported cases and rates of acute hepatitis B and acute hepatitis C among persons aged 18 to 40 years for 2021.
Characteristics Acute Hepatitis B Acute Hepatitis C
No. Rate* No. Rate*
Total§ 656 0.6 2,745 2.8
Sex
Male 371 0.7 1,802 3.6
Female 285 0.6 938 1.9
Race/Ethnicity
American Indian/Alaska Native, non-Hispanic 3 0.4 45 6.6
Asian/Pacific Islander, non-Hispanic 14 0.2 33 0.5
Black, non-Hispanic 136 1.0 228 1.6
White, non-Hispanic 353 0.6 1,758 3.3
Hispanic 90 0.4 284 1.3
HHS Region
Region 1 19 0.4 226 5.3
Region 2 32 0.4 212 2.4
Region 3 60 0.7 216 2.4
Region 4 351 1.7 1,072 5.3
Region 5 92 0.6 488 3.1
Region 6 52 0.4 224 1.6
Region 7 13 0.3 20 0.5
Region 8 6 0.1 122 2.9
Region 9 22 0.1 64 0.5
Region 10 9 0.2 101 2.3
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Source: ÐÇ¿ÕÓéÀÖ¹ÙÍø, National Notifiable Diseases Surveillance System.
* Rate per 100,000 population.
† Reported confirmed cases. For case definitions, see .
§ Numbers reported in each category may not add up to the total number of reported cases in a year due to cases with missing data or, in the case of race/ethnicity, cases categorized as “Other.”
¶ US Department of Health and Human Services regions were categorized according to the grouping of states and US Territories assigned under each of the 10 . For the purposes of this report, regions with US territories (Region 2 and Region 9) contain data from states only.

The number of reported cases and rates of acute hepatitis B and acute hepatitis C among persons aged 18–40 years for 2021. Persons aged 18–40 years were used as a proxy for persons who inject drugs.

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