For five gruelling months in 2006 and 2007, Carol Kanga suffered through treatment for a life-threatening case of throat cancer linked to an unlikely source: a sexually transmitted viral infection.
Kanga's treatment was successful, but the virus that struck her is causing increasing concern among some researchers who think it is causing a small-scale epidemic of throat cancer.
That virus, scientists have proved only in the last two years, is human papillomavirus, or HPV - the same virus that's behind most cases of cervical cancer.