Table 6: The prevalence of antibodies among different ethnic groups.

Ethnic Group Positive n (%) Negative n (%) Total
African 12 (80) 3 (20) 15 (100)
Arab 48 (96) 2 (4) 50 (100)
Others (Mixed) 13 (86.7) 2 (13.3) 15 (10)

P = 0.296.