The proportion of oral cancers caused by the human papillomavirus has risen significantly in Canada, say researchers, who suggest the infection is now behind an estimated three-quarters of all such malignancies.
In a cross-Canada study, published Monday in the Canadian Medical Association Journal, the researchers found the incidence of HPV-related oropharyngeal cancers increased by about 50 per cent between 2000 and 2012.
“It’s a snapshot of looking at the disease burden and the time trend to see how the speed of the increase of this disease (is changing),” said co-author Sophie Huang, a research radiation therapist at Princess Margaret Cancer Centre in Toronto.
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