Table 3 Summary of ELISA scores sorted by era of collection and country of origin
ELISA score | No. (%) of sera collected in 1999 or prior in the country indicated | No. (%) of sera collected in 2000 or later in the country indicated | ||||
|---|---|---|---|---|---|---|
United States | Canadaa | Total | United States | Canada | Total | |
Neg | 673 (90.6) | 723 (95.0) | 1396 (92.8) | 802 (95.0) | 870 (91.9) | 1672 (93.4) |
1+ | 43 (5.8) | 20 (2.6) | 63 (4.2) | 22 (2.6) | 41 (4.3) | 63 (3.5) |
2+/3+ | 18 (2.4) | 17 (2.2) | 35 (2.3) | 14 (1.7) | 24 (2.5) | 38 (2.1) |
4+/5+ | 9 (1.2) | 1 (0.1) | 10 (0.7) | 6 (0.7) | 12 (1.3) | 18 (1.0) |
Total | 743 | 761 | 1504 | 844 | 947 | 1791 |