Abstract

Given the strong association between high-risk HPV genotypes, such as HPV 16 and 18, and cervical cancer, this study aimed to compare the distribution of common HPV genotypes in the southwest Iranian population with those included in the available vaccines. Based on the sample quality, DNA was extracted from the biological samples of 8036 individuals included in the study using three different methods (automated instrument, column, and precipitation), and a total of 21 different HPV genotypes were detected using real-time PCR. The majority of participants were women (> 99%), with a positive rate of HPV infection of 29.9%, in which high-risk genotypes were dominant in 84.9% cases. The highest rate of HPV infections was observed in the age ≤ 30 years (35.9%). HPV 6 and 16 were the most frequent low- and high-risk genotypes, respectively. Multi HPV infections were observed in 35% of positive samples and the highest cross infections were observed between HPV6 and 16. Co-infection with HPV 16 and 18 was observed in 21 positive samples (1%). Although vaccination is essential to reduce the outcome of HPV infections, such as cervical cancer, other frequently occurring high-risk genotypes are not included in the 9-valent vaccine. Since the association between cervical cancer and other high-risk HPV types rather than 16 and 18 has been less studied, investigating their pathogenicity in cervical cancer is recommended. Furthermore, the new generation of HPV vaccines should contain other frequently occurring high-risk genotypes beyond those currently covered in approved vaccines.

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