There is no doubt that the new cervical cancer vaccine -- Gardasil -- is revolutionary. But writer Peter Sprigg, vice president for policy at the Family Research Council, shared yesterday on the washingtonpost.com that the public should consider two cautions when digesting the news of this breakthrough medical advance. He urges us, first, to understand that the vaccine is not 100 percent effective. It is 100 percent effective for the strains of human papillomavirus (HPV) it targets -- but it leaves 30 percent of HPV strains that cause cervical cancer untouched. And it does not prevent all cases of genital warts either. So it is largely effective. But it does not completely eradicate the disease.

Sprigg also believes that parents should determine whether or not their young girls get the vaccine -- that it should not be mandatory. Mandating the vaccine might be in order if HPV was spread through blood or casual contact. But it is not -- it is spread by sexual contact. And families of young girls might best address this issue through education on behavioral issues alone, without interference from the government.

The wonder of the cervical cancer vaccine is not in question by this writer and the council he represents. But there is often a full picture that lingers behind good news and sensational headlines. And Peter Sprigg offers his take on what he believes lingers behind.