If HPV type 52 infection is persistent, it takes about 2-3 years for a low-grade precancerous lesion to develop after infection, and about 3 years for a low-grade lesion to transform into a high-grade lesion if no intervention is given. It also takes about 2-3 years for a high-grade precancerous lesion to turn into cervical cancer again. So it takes about 7-8 years from the time of persistent HPV 52 infection to the time of conversion to cervical cancer. It is recommended that women must have regular cervical cancer screening. Once a high-risk HPV infection is detected, colposcopy should be done first and timely treatment should be given if lesions are found to eliminate the occurrence of cervical cancer.