Table 3.
Reports from category 3 (blood bank) sentinels, 1998–2002
| Disease and area | Year | ||||
|---|---|---|---|---|---|
| Viral hepatitis B | 1998 | 1999 | 2000 | 2001 | 2002 |
| Africa | |||||
| Number of sentinels | 5 | 6 | 4 | 4 | 6 |
| Number of donors | 97979 | 50694 | 44590 | 84385 | 86741 |
| % positive | 2·52 | 4·41 | 3·96 | 5·20 | 5·89 |
| Americas | |||||
| Number of sentinels | 4 | 4 | 2 | 2 | 1 |
| Number of donors | 42968 | 58856 | 22772 | 58339 | 14240 |
| % positive | 1·42 | 0·01 | 0·54 | 0·41 | 0·46 |
| Asia | |||||
| Number of sentinels | 6 | 6 | 6 | 6 | 5 |
| Number of donors | 186525 | 152665 | 539677 | 316052 | 6020 |
| % positive | 1·96 | 3·69 | 1·84 | 2·17 | 8·64 |
| Viral hepatitis C | |||||
| Africa | |||||
| Number of sentinels | 4 | 4 | 4 | 2 | 3 |
| Number of donors | 97689 | 48186 | 44025 | 58040 | 68515 |
| % positive | 5·81 | 5·14 | 3·18 | 2·58 | 1·61 |
| Americas | |||||
| Number of sentinels | 5 | 4 | 2 | 2 | 1 |
| Number of donors | 42968 | 58856 | 22775 | 59340 | 13240 |
| % positive | 1·01 | 0·01 | 0·48 | 0·33 | 0·50 |
| Asia | |||||
| Number of sentinels | 6 | 5 | 5 | 4 | 4 |
| Number of donors | 69423 | 80180 | 494280 | 283073 | 5782 |
| % positive | 0·97 | 1·32 | 0·67 | 0·64 | 2·01 |
| HIV | |||||
| Africa | |||||
| Number of sentinels | 5 | 6 | 4 | 4 | 6 |
| Number of donors | 94109 | 49184 | 44590 | 82563 | 86741 |
| % positive | 0·51 | 1·98 | 1·89 | 1·44 | 1·40 |
| Americas | |||||
| Number of sentinels | 5 | 4 | 2 | 2 | 1 |
| Number of donors | 42968 | 58856 | 22771 | 59339 | 14240 |
| % positive | 0·56 | 0·00 | 0·27 | 0·21 | 0·20 |
| Asia | |||||
| Number of sentinels | 6 | 6 | 6 | 6 | 5 |
| Number of donors | 273652 | 168516 | 556772 | 339519 | 5782 |
| % positive | 0·29 | 0·30 | 0·14 | 0·21 | 0·93 |
| Syphilis | |||||
| Africa | |||||
| Number of sentinels | 2 | 6 | 4 | 4 | 4 |
| Number of donors | 29371 | 47034 | 44590 | 70792 | 76868 |
| % positive | 1·06 | 1·54 | 1·44 | 1·51 | 1·51 |
| Americas | |||||
| Number of sentinels | 5 | 4 | 2 | 2 | 1 |
| Number of donors | 42968 | 58856 | 22439 | 58426 | 14240 |
| % positive | 1·29 | 0·01 | 2·20 | 1·39 | 0·65 |
| Asia | |||||
| Number of sentinels | 6 | 6 | 6 | 6 | 4 |
| Number of donors | 158 760 | 109 038 | 501 772 | 302 078 | 5781 |
| % positive | 0·87 | 0·86 | 0·50 | 0·60 | 0·78 |