Genotype Distribution and Prevalence of High-Risk Human Papillomavirus Infection among Women in Samsun Province of Turkey.

backgroundThe human papillomavirus (HPV) is an important public health problem that can cause cervical cancer. HPVs were classified into high-risk (HR-HPV) and low-risk (LR-HPV) types. In this study, we aimed to determine the prevalence and genotype distribution of HR-HPV infection in Samsun province in Turkey.

methodsCervical smear samples taken from 5406 women over a 23-month period were evaluated for the presence of HPV infection. The detection of HPV genotypes was performed using RT-PCR technology. HPV detection and genotyping were performed using RT-PCR method. HR- HPV types are divided into 3 groups as type 16,  type 18 and other types (31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66, 68, with or without type 16 and 18).  The results were evaluated statistically.

resultsThe mean age of HR-HPV positive patients was 39.56 years (20-68 years). The prevalance of HR-HPV types did not differ between different age groups (p˃0.05). Overall, 9.17% of women (496/5406 samples) were found to be positive at least one type of HR-HPV. HPV type 16 was detected in 28.62%, type 18 in 9.67%, and other types in 78.83%. The most common HR-HPV type was other types (p˂0.001). Type 16 was most common than type 18 (p˂0.001). The patients were evaluated by dividing them into 6 age groups. Type 16 positivity was higher in 30-39 ages while type18 and other types positivity were higher in the 40-49 age group. When the 23-month period of HPV test was evaluated according to months and seasons, the highest prevalance was seen in June 2021 and Summer 2021.

conclusionTo our knowledge, this is the first large-scale study of HR-HPV prevalence and genotype distribution among women in Samsun Province of Turkey.  The other types containing one or more types made up the majority of the studied population.