IARC’s COLPOSCOPY AND TREATMENT OF CERVICAL INTRAEPITHELIAL NEOPLASIA: A BEGINNER’S MANUAL states:

“Despite women’s frequent exposure to HPV, development of cervical neoplasia is uncommon. Most cervical abnormalities caused by HPV infection are unlikely to progress to high-grade CIN or cervical cancer, as most of them regress by themselves. The long time frame between initial infection and overt disease indicates that several co-factors (e.g., genetic differences, hormonal effects, micronutrient deficiencies, smoking, or chronic inflammation) may be necessary for disease progression. Spontaneous regression of CIN may also indicate that many women may not be exposed to these co-factors.”  PDF

ALLIANCE FOR HUMAN RESEARCH PROTECTION (AHRP)
Advancing Honest and Ethical Medical Research
www.ahrp.org
The National Institute of Allergy and Infectious Diseases halted its HIV Vaccine Trials Network 505 “because it wasn’t working.”
“I wish I could say I was surprised,” commented Robert Schooley, MD, of the University of California San Diego, who acknowledged, “there remain gaps in that scientific understanding…”

The trial, which was started in 2009, is the latest in a series of failed trials. The study, called HVTN 505, had enrolled 2,504 volunteers in 19 U.S. cities. It was looking at men who have sex with men and transgender people who have sex with men.
The trial was halted when it was shown that there were 27 infections in vaccine recipients and 21 in those who got the placebo. And among volunteers who got infected before they had spent 28 weeks in the study, there were 14 HIV infections in the vaccine arm and 9 among placebo recipients.

In other words, the trial demonstrated that the vaccine induced HIV infection rather than prevent it!
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