KRT1 and infection: Of the 105 samples showing mixed-allelic types of infection: 45 (19.57% of overall samples) were K1 + MAD20; 25 (10.87%) K1 + RO33; 15 (6.52%) MAD20 + RO33, and 20 (8.70%) K1 + MAD20 + RO33 (Table 3).