Table 2. Proportion of Hepatitis B Surface Antigen and Potential Exposure Based on Hepatitis B Core Antibody Positivity Among African-Born Persons by Country of Origin, Chicago Metropolitan Area, 2012–2014.
| Country of Origin | HBsAg and Anti-HBc Results |
||
|---|---|---|---|
| HBsAg Positive, No. (%) | Anti-HBc Positivea, No. (%) | Total No. Tested | |
| Algeria | 0 | 0 | 2 |
| Benin | 0 | 0 | 1 |
| Cameroon | 0 | 0 | 4 |
| Central Africa Republic | 3 (43) | 0 | 7 |
| Chad | 0 | 0 | 6 |
| Democratic Republic of the Congo | 3 (5) | 21 (11) | 62 |
| Cote d’Ivoire (Ivory Coast) | 1 (33) | 2 (1) | 3 |
| Djibouti | 2 (50) | 0 | 4 |
| Egypt | 0 | 2 (1) | 3 |
| Eritrea | 0 | 0 | 6 |
| Ethiopia | 2 (4.5) | 2 (1) | 44 |
| Ghana | 4 (8) | 1 (.05) | 49 |
| Guinea | 0 | 0 | 1 |
| Kenya | 0 | 6 (3) | 11 |
| Liberia | 1 (33) | 0 | 3 |
| Libyan Arab Jamah | 0 | 2 (1) | 4 |
| Malawi | 0 | 0 | 2 |
| Mauritania | 0 | 1 (.05) | 2 |
| Morocco | 0 | 0 | 4 |
| Mozambique | 0 | 0 | 3 |
| Namibia | 0 | 1 (.05) | 5 |
| Niger | 0 | 0 | 2 |
| Nigeria | 4 (7) | 4 (2) | 58 |
| Rwanda | 1 (4) | 1 (.05) | 26 |
| Sierra Leone | 1 (50) | 1 (.05) | 2 |
| Somalia | 7 (15) | 13 (7) | 47 |
| Sudan | 5 (25) | 4 (2) | 20 |
| Syria | 0 | 0 | 2 |
| Tanzania | 0 | 1 (.05) | 2 |
| Togo | 0 | 1 (.05) | 8 |
| Uganda | 0 | 6 (3) | 13 |
| Zaire | 1 (3) | 0 | 34 |
| Zimbabwe | 0 | 0 | 2 |
| Other Africab | 0 | 3 (1.5) | 3 |
| Totals | 35 (8) | 72 (37) | 445 |
Abbreviations: anti-HBc, hepatitis B core antibody; anti-HBs, hepatitis B surface antibody; HBsAG, hepatitis B surface antigen.
a
194 participants had serological data for all 3 tests (HBsAg, anti-HBc, anti-HBs).
b
Three participants indicated “Africa” rather than a specific country.