Merck could lose up to $630 million in Gardasil revenue this year now that the U.S. no longer recommends three doses of the HPV shot in the childhood vaccine schedule, according to Jefferies analysts.

India is preparing to launch a 90-day mega drive to provide free HPV vaccines to 14-year-old girls. The move is being seen as a major step in preventing cervical cancer, one of the most common cancers ...