Fig. 3From: High prevalence of co-infection between human papillomavirus (HPV) 51 and 52 in Mexican populationThe frequency of high-risk HPV genotypes increased with the number of HPV genotypes in co-infection. Data represents the percentage of infected women with a) HPV 16, b) 18, c) 30, d) 31, e) 33, f) 35, g) 51, and h) 52 in co-infection of 2, 3, 4, and 5 genotypes *p < 0.05, *p < 0.01, ***p < 0.001 (single- vs co-infection), z-testBack to article page