World-wide, according to Dr. Gillison at Hopkins, 95% of cervical cancers are caused by five
HPV types -- 16, 18, 31, 33, and 35 -- the rate is lower in USA as other HPVs are involved (as well as other causes, as Kerry notes) -- about 70% as I recall.
Dr. G. has been involved in a trial of a new therapeutic
HPV-16 vaccine which has been tested for about a year on cervical cancer patients and she has started a trial with this vaccine on HNC patients, as I have mentioned before. *If* it proves successful, it will be another arsenal in the fight against oral and cervical cancers.
Gail