http://www.smh.com.au/news/national/pap-smears-still-essential-say-specialists/2008/08/25/1219516370509.htmlAUSTRALIA'S cervical cancer rate could start to rise again if a new generation of young women vaccinated against the disease is not encouraged to continue having Pap smears, says a group of specialist doctors who are calling on the Federal Government to clarify the screening program's future. The pathologists - who include the inventor of the cervical cancer vaccine, Professor Ian Frazer - met two weeks ago to develop a new policy on preventing the disease. The move comes amid concern that
immunisation could give women a false sense of security and undermine Pap smear screening, credited with halving cervical cancer cases and deaths since its introduction in 1994. ...
Dr Medley, head of cancer pathology at Melbourne Pathology, said
the high cost of the vaccine program - $436 million in its first three years - might pressure the Federal Government to economise on Pap screening, which cost $104 million in 2006. Annabelle Farnsworth, director of cancer pathology at Douglass Hanly Moir Pathology, said immunisation, offered to 12-year-olds in a school-based program and to women aged 18 to 26, only offered protection against virus strains most likely to lead to cancer.
But other strains could also cause the disease. "What if the other ones become more prevalent?" said Adjunct Professor Farnsworth.Government analysis had shown
expected cancer risk was three times higher in vaccinated women who did not have Pap tests than among unimmunised women who had regular two-yearly smears, she said.
The doctors' comments come amid rising concern overseas that the value of immunisation may have been oversold. It was unknown whether vaccinating against some strains might adversely affect women's natural immune defences against others, wrote Dr Charlotte Haug last week in the influential New England Journal of Medicine. As well, it was possible protection against HPV might wane over time, leaving women vulnerable later in life. "With so many essential questions unanswered, there is good reason to be cautious about large-scale vaccination programs," Dr Haug wrote.