Unlike other forms of cancer, cervical cancer is easily preventable and treatable - yet it still kills a quarter of a million women each year.
The vast majority of these cases are in developing countries, especially in rural areas where there is limited access to screening.
But this could be on the verge of changing thanks to a cheap, simple, new test called careHPV.
Specially designed for use in areas without reliable access to clean water or electricity, the test can be done by women at home, and analysed without modern laboratory infrastructure.
Dr Louise Pealing travels to rural El Salvador, where 30,000 women are being screened using this new test which could potentially save thousands of lives worldwide.
Watch The Cure on Tuesday 22:30; Wednesday 09:30; Thursday 03:30; Friday 16:30; Saturday 22:30; Sunday 09:30; Monday 03:30; Tuesday 16:30 GMT.
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