Epidemiological survey and risk factor analysis of high-risk human papillomavirus in women in Longgang District, Shenzhen.

OBJECTIVE: The objective of this study was to assess the prevalence of high-risk HPV infection in married women in Longgang District, Shenzhen, and to analyze the distribution of HPV subtypes across different age groups while identifying risk factors associated with HPV infection.

METHODS: 1. From January 2018 to December 2020, 209,627 married women in Longgang District were selected as study subjects, using high-risk HPV testing as the primary screening means. HPV 16 or 18 positive directly referred to colposcopy, other types positive continued liquid-based thin-layer cytology (TCT) examination, if ≥ ASCUS, referred to colposcopy, and biopsy if necessary. 2. 210 female patients who came to our hospital for HPV testing from January 2018 to December 2020 were used for the study, including 130 HPV-positive patients and 80 HPV-negative patients. The risk factors of HPV infection were studied by questionnaire.

RESULTS: The HPV infection rate in 2018 was 13.17%, including LSIL 6.87%, HSIL 3.57%, the single type infection rate was 79.83%, top5 monotypes were 52, 53, 16, 58, 81, multiple types infection rate was 20.17%, top5 multiple types were 52/ 53, 52/68, 16/52 52/58, 52/81; 2019 HPV positivity rate was 10.23%, including LSIL 5.98%, HSIL 5.81%, the monotypic infection rate was 82.5%, top5 monotypic were: 52, 16, 58, 51, 53, multi heavy sex infection rate was 17.5%, top5 multi typic were: 52/53, 52/58, 52/68, 16/52, 51/52; HPV positive rate in 2020 was 11.28%, including LSIL 6 %, HSIL 4.84%, monotypic infection rate was 79.89%, top5 monotypic were: 52, 16, 53, 58, 51, multiheavy category infection rate was 20.11%, top5 multitypic were: 52/58, 16/52, 52/68, 52/53, 51/52. 30-50 years old is the high prevalence age of HPV susceptibility, followed by 50-60 years old, and HPV52 is the most common type. 2. 210 female patients were surveyed by filling out questionnaires: Smoking history, age at first sex, age at first pregnancy, abortion, number of sexual partners, contraceptive method, bleeding during intercourse, cervicitis, vaginitis, sleeping habits, and mental status totaling 11 factors were significant between infected and control (P < .05). Dichotomous logistic regression analysis with these 11 factors as independent variables and HPV infection as dependent variable revealed that abortion (OR=2.117, 95% CI: 1.337-3.354), number of sexual partners (OR=2.562, 95% CI: 1.222-5.373), cervicitis (OR=2.873, 95% CI: 1.407-5.868), vaginitis (OR=2.413, 95% CI: 1.158-5.026) staying up late (OR=2.408, 95% CI: 1.134-5.115) and mental status (OR=3.139, 95% CI: 1.470-6.703) were six factors that were risk factors for HPV infection.

CONCLUSION: The common HPV infection types among women in Longgang district were mainly 52, 16, 58, 53, and 51, with a predominance of a single type of infection. The positive rate and pathogenicity of HPV 52 were higher than HPV 16. Women aged 30-60 years should be included in priority screening for cervical lesions. The six factors of miscarriage, number of sexual partners, cervicitis, vaginitis, staying up late, and mental status were risk factors for HPV infection occurrence.