We have therefore conducted a survey of the scientific literature to present an overall portrait of the situation, taking into consideration the various aspects of the problem. [...] The Delphi method was developed in the United States in the early 1950s and consists of collecting and condensing the existing knowledge of experts, in a dynamic and scientific manner. [...] In the absence of any HPV infection, the risk of cervical cancer among women over 50 is less than 0.5%, even in the absence of screening. [...] According to the sensitivity analysis, the risk of cervical cancer is influenced mostly by the incidence of HPV infection, the proportion of HPV infections that progress directly to a high-grade intraepithelial lesion and finally, by the level of progression of the low-grade lesions. [...] Evolution of the incidence of cervical cancer The historical trend indicates a significant reduction in the incidence of cervical cancer in the nineties, mostly among women 25 to 54, but little change among women over 55 (Sasieni 2001, Hemminki 2002).