TABLE 1.
Distribution of HBV genotypes among 418 HBsAg-positive American blood donors
| Genotype | PreS2 serotype | No. of samples | % of samples |
|---|---|---|---|
| A | su | 143 | 34.2 |
| B | m | 31 | 7.4 |
| C | ks | 59 | 14.1 |
| D or Ea | ksu | 83 | 19.9 |
| F | k | 4 | 1.0 |
| UDb | 98 | 23.4 |
a
Genotypes D and E could not be differentiated with the HBV genotype ELISA kit used.
b
UD, undetermined. Eleven of 98 samples were positive for at least one of the preS2 type-specific epitopes (m, k, s, and u), but the epitope pattern of positive samples was different from that of samples with defined genotypes.