From the total of 139 successfully genotyped samples by nested PCR; the frequency of msp-1 allelic families detected in monoclonal isolates were 48%, 13%, 13% for MAD20, K1 & RO33, respectively, and the remaining 24% were diclonal (MAD20 + K-1, MAD20 + RO33, K-1 + RO33) and 2% triclonal (MAD20 + K1 + RO33) infections. This evidence concerns the gene KRT1 and infection.