New Mexico's Gov. Bill Richardson will reportedly sign a bill making it mandatory for all sixth-grade girls to be vaccinated against HPV, the sexually transmitted virus that can cause cervical cancer. The measure would take effect June 15 -- 90 days after the adjournment of the Legislature.

After an initial approval from the state House on Sunday, Gov. Bill Richardson said, "It's a public health issue, and I believe it's an important step. New Mexico has always been progressive on these issues. ... We've got to find ways for young women to be protected."

The move in New Mexico follows a similar measure currently enacted in Texas. Virginia lawmakers passed a similar law and the measure is being considered by Massachusetts Gov. Deval Patrick.

The FDA has approved Gardasil, a three-dose vaccine that protects against the human papilloma virus, or HPV, in June for females ages 9 to 26. HPV can cause cervical, vulvar and vaginal cancers and genital warts. The vaccine would be manufactured by Merck and Co.