Fig. 6

Age-specific prevalence of the six most common HR-HPV genotypes. A The overall prevalence of HPV 52, 58, 53, 16, 39, and 18 was gradually increased with age. B HPV 52 indicated an apparent bimodal pattern, while HPV 18 hardly changed with age. HPV 53 and 58 increased with age, while HPV 16 decreased with age until 70. HR-HPV High-risk HPV, HPV Human papillomavirus