Researchers have more evidence that cervical cancer could someday be wiped out.
They've been experimenting with a second vaccine. And they say it appears to provide some sweeping protections against infection and risky pre-cancerous conditions for more than two years.
The study was conducted in the U.S. and Brazil. Patients who were given the vaccine kept a high level of immune response against the virus that spreads cervical cancer.
There will have to be a longer trial to determine if people would eventually need to be vaccinated again.
The study was supported by the company that makes the vaccine, GlaxoSmithKline. The research appears in the British medical journal The Lancet.
Worldwide about a-half million women get cervical cancer each year and about half die.
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