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Characteristics of Balamuthia mandrillaris seropositive and seronegative blood donors, Southern Arizona, USA, 2010
| Seropositive (N=11) | Seronegative (N=430) | p-value | |
|---|---|---|---|
| n (%) | n (%) | ||
| Male | 6 (55%) | 236 (55%) | >0.99 |
| Age < 40 years | 6 (55%) | 248 (58%) | >0.99 |
| Hispanic ethnicity | 6 (55%) | 169 (39%) | 0.53 |
