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. Author manuscript; available in PMC: 2023 Feb 18.
Published in final edited form as: Sex Transm Dis. 2021 Apr 1;48(4):305–309. doi: 10.1097/OLQ.0000000000001359

Table 1.

Unadjusted Number and Rate of Acute Hepatitis B Cases, among persons ages 15 years and older, United States, 2013 – 2018

 Characteristic Acute
Casesa
Rate per
100,000
IR, (SE) STACUTE Acute
Casesb
Rate per
100,000
IR, (SE)
Overall 19,032 1.2 N/A 38.2% 7,270 0.5 N/A
Demographic Factors Sex -
 Male 11,754 1.5 1.71 (0.03) 37.6% 4,420 0.6 1.64 (0.04)
 Female 7,211 0.9 Ref 39.3% 2,834 0.4 Ref
Age Group (years) - -
 15-29 1,866 0.5 0.55 (0.02) 31.2% 582 0.1 0.41 (0.02)
 30-39 5,831 2.3 2.70 (0.05) 33.1% 1,930 0.8 2.14 (0.07)
 40-49 5,646 2.3 2.69 (0.05) 41.5% 2,343 1.0 2.67 (0.08)
 50+ 5,689 0.9 Ref 41.9% 2,384 0.4 Ref
Race/Ethnicity - -
 Asian/Pacific Islander 344 0.4 0.80 (0.05) 36.1% 124 0.1 0.54 (0.05)
 Non-Hispanic, Black 2,296 1.2 2.58 (0.09) 68.1% 1,419 0.7 2.97 (0.14)
 Non-Hispanic, White 11,981 1.2 2.59 (0.08) 34.4% 4,121 0.4 1.67 (0.07)
 Hispanic 1,143 0.5 Ref 53.5% 612 0.2 Ref
Geographic Factors Region c - -
  Southern 11,682 2.0 3.18 (0.08) 46.3% 5,409 0.9 4.23 (0.18)
  Western 1,827 0.5 0.79 (0.03) 11.6% 212 0.1 0.27 (0.02)
  Midwestern 3,807 1.2 1.84 (0.05) 30.0% 1,142 0.3 1.58 (0.08)
  Northeastern 1,716 0.6 Ref 34.8% 597 0.2 Ref
Rural/Urban - - -
  Rural geographic area 3,342 2.3 2.18 (0.04) 25.5% 852 0.6 1.39 (0.05)
  Urban geographic area 13,605 1.1 Ref 40.0% 5,442 0.4 Ref

Abbreviations: IR, incident rate; SE, standard error; STACUTE, proportion of acute HBV infections attributed to sexual transmission.

a

Unadjusted number and rate of Hepatitis B infections in the United States, all means of transmission.

b

Unadjusted number and rate of Hepatitis B infections in the United States, attributed to sexual transmission.

c

The 4 regions of residence used in this report are defined by the US Census Bureau as follows:

Northeastern: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont

Midwestern: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin

Western: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming

Southern: Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North

Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and West Virginia