The vaccine protects against the human papilloma virus - or HPV - which can cause cervical cancer
A US government panel recommends that preteens receive fewer shots of the vaccine against HPV against cervical cancer. It also recommends that the shots are further apart.
Since the vaccine against HPV is on sale there ten years, three doses were required. The group decided that two doses are sufficient.
Now it will be easier for parents to get their children the course of vaccine against HPV, and protect their children against HPV cancers, "Dr. Nancy Messonnier Centers for Disease Control and Prevention said.
"Protection against HPV cancers safe, effective and long-term visits with two instead of three means more Americans will be protected against cancer," said CDC Director Tom Frieden. "This recommendation will make it easier for parents to get their children protected in time."
The vaccine protects against the human papilloma virus - or HPV - which can cause cervical cancer, some other cancers and genital warts. It is often transmitted by sex and, in most cases the virus does not cause problems. But gradually some infections lead to cancer.
Health authorities want the children to be vaccinated against HPV 11 or 12 years, long before most first have sex and before they can be infected.
But less than a third of boys and 13 American girls got three doses. Busy parents have struggled with the old calendar, which called for three doctor visits within six months.
The panel is bonded to three doses for anyone who does not get their first shot until they turn 15. This is because they did not have enough data about how two doses worked at older children.
The CDC says that nearly 80 million Americans are infected with HPV; in most cases, the immune system clears the infection. However, more than 38,000 cases of HPV-associated cancers occur in the US each year.