Table 2.
Mothers identified as having hepatitis C virus (HCV) infection, by NEDSS maternal laboratory results, Tennessee, 2013-2017 a
| Birth year | NEDSS- identified mothers, b no. | Infants born to mothers with past or present HCV infection reported in NEDSS | ||||
|---|---|---|---|---|---|---|
| Probable exposure, c no. (%) | Confirmed exposure, d no. (%) | No exposure, e no. (%) | Total exposed, f no. (%) | HCV-exposed per 1000 live births, g % | ||
| 2013 | 669 | 304 (45.4) | 327 (48.9) | 38 (5.7) | 631 (94.3) | 7.9 |
| 2014 | 850 | 311 (36.6) | 501 (58.9) | 38 (4.5) | 812 (95.5) | 9.9 |
| 2015 | 1068 | 350 (32.8) | 631 (59.1) | 87 (8.1) | 981 (91.9) | 12.1 |
| 2016 | 1409 | 477 (33.9) | 770 (54.6) | 162 (11.5) | 1247 (88.5) | 15.4 |
| 2017 | 1429 | 430 (30.1) | 808 (56.5) | 191 (13.4) | 1238 (86.6) | 15.3 |
| Total | 5425 | 1872 (34.5) | 3037 (56.0) | 516 (9.5) | 4909 (90.5) | 12.1 |
Abbreviation: NEDSS, National Electronic Disease Surveillance System.
aData source: Tennessee Department of Health NEDSS Base System (NBS). 13
bThe number of mothers who had a history of HCV (past or present) indicated by an HCV antibody-positive or HCV RNA-positive laboratory test result before or during pregnancy.
cMothers who did not have an HCV RNA laboratory test result but had an HCV antibody-positive laboratory test result before or during pregnancy.
dMothers who had at least 1 HCV RNA-positive laboratory test result during pregnancy or, in the absence of an HCV RNA pregnancy laboratory test result, at least 1 HCV RNA test was conducted before pregnancy and the last HCV RNA test result before pregnancy was positive.
eMothers who had a history of an HCV antibody-positive or HCV RNA-positive laboratory test result and only HCV RNA-negative laboratory test results during pregnancy or, in the absence of an HCV RNA pregnancy laboratory test result, at least 1 HCV RNA test was conducted before pregnancy and the last HCV RNA test result before pregnancy was negative.
fTotal exposed = probable exposure + confirmed exposure.
gHCV exposed per 1000 live births = (total exposed/live births) x 1000.