| 
      
        | Group Allele A | Allele frequency in Exposed infected n (%) | Allele frequency in Exposed non infected n (%) | P value |  
        | A*01 | 2(2.9) | 1(1.8) | 0.67 |  
        | A*02 | 18(26.5) | 14(25) | 0.84 |  
        | A*03 | 8(11.8) | 4(7.1) | 0.38 |  
        | A*11 | / | 4(7.1) | / |  
        | A*23 | 6(8.8) | 5(8.9) | 0.98 |  
        | A*24 | 1(1.5) | 1(1.8) | 0.88 |  
        | A*25 | / | 2(3.6) | / |  
        | A*26 | 2(2.9) | 2(3.6) | 0.84 |  
        | A*29 | 7(10.3) | 5(8.9) | 0.79 |  
        | A*30 | 9(13.2) | 6(10.7) | 0.66 |  
        | A*31 | 1(1.5) | 1(1.8) | 0.88 |  
        | A*32 | 1(1.5) | 1(1.8) | 0.88 |  
        | A*33 | 2(2.9) | 1(1.8) | 0.67 |  
        | A*34 | / | 2(3.6) | / |  
        | A*36 | 2(2.9) | 1(1.8) | / |  
        | A*66 | / | 2(3.6) | / |  
        | A*68 | 5(7.4) | 3(5.4) | 0.65 |  
        | A*74 | 4(5.9) | / | / |  
        | A*80 | / | 1(1.8) | / |  |