(Reuters) - A test that looks for the virus found in 99 percent of cervical tumors is far more effective than a Pap smear for detecting the early stages of cervical cancer, Canadian researchers said on Wednesday.The test for the human papillomavirus, or HPV, found 95 percent of cases in which women had potentially pre-cancerous changes in the cervix. This compared to 55 percent of Pap smears, the team at McGill University in Montreal found.
