Table 4 Percentage of donors approved according to the Portuguese criteria for blood screening and serologic results
From: Post-exposure serological responses to malaria parasites in potential blood donors
Condition | Â | Criteria for approval | Donors approval % | Â |
|---|---|---|---|---|
Individuals who lived the first 5 years of life in endemic areas (n = 85) | Epidemiological criterion | 3 year after return (n = 45) | 52.9 (45/85) | Of which 28.9% (13/45) that would be approved were seropositive |
Laboratory criterion | If returned between 4 month and 3 year and seronegative (n = 14) | 16.5 (14/85) | (All approved would be seronegative) | |
Asymptomatic travellers (length of stay <6 months) from endemic areas (n = 308) | Epidemiological criterion | 1 year after return (n = 147) | 47.7 (147/308) | Of which 5.4% (8/147) that would be approved were seropositive |
Laboratory criterion | If returned between 4 month and 1 year with serological test nonreactive (n = 31) | 10.1 (31/308) | (All approved would be seronegative) |