The end of cervical cancer? It might be within reach.

Emerging evidence suggests that just one dose of the HPV vaccine is as effective as two or three—and that has huge implications for the battle against cervical cancer.

Cervical cancer is often called “a silent killer” because there are no obvious early warning signs. As the fourth most common cancer in women, it kills more than 300,000 a year globally.

But what if we could better protect against the virus that causes most cervical tumors?

The human papillomavirus, better known as HPV, is one of the most common sexually transmitted infections in the world because it often circulates without causing any disruptive symptoms. But it can cause genital warts and various cancers in both men and women—and is driving the recent rise of throat cancer in men.

Even though vaccines that prevent HPV have existed since 2006, experts say a new development may

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