Vaccine hope for Tasmanian devil tumour disease : Nature News & Comment
This shouldn't be too surprising that mutant DNA acts a lot like a ravenous virus, as viruses themselves merely contain RNA or DNA which are in themselves infectious, further substantiated by the above article.
It makes you think, why cancer rates are rising, well to answer that question you could ask why flu rates are higher in denser communities. It also explains 'cancer clusters'.