New cheaper human papilloma virus mass screening strategy reduces cervical cancer incidence in Changsha city: A clinical trial

Figure 1 Changsha human papillomavirus cervical cancer prevention screening flow chart. Cervical cancer screening included gynecological examination, vaginal secretion examination, and high-risk human papillomavirus (HPV) type testing. Cervical cytology examination (ThinPrep cytology test) was performed in women who were positive for HPV types other than 16 and 18. Vaginal colposcopy was performed in women who were positive for HPV 16 and 18, as well as those who were positive for ThinPrep cytology test. If the results of vaginal colposcopy examination were abnormal, histopathological examination was performed. HPV: Human papillomavirus.