<prompt> Two viral vaccines are expected to reduce the incidence of cancers. Which vaccines are these?Adenovirus and mumps virus vaccinesHAV and poliovirus vaccinesHPV 1618 and hepatitis B vaccinesMeasles virus and rubella virus vaccines  <response>: HPV 1618 and HBV c are implicated in cervical and other genital cancer and hepatocellular carcinoma, respectively. Thus, the vaccines against these agents are expected to reduce the incidence of these cancers. This has been seen in regions of the world where routine HBV vaccine is used at birth or shortly thereafter. The other vi ruses-adenovirusmumps virus a, HAVpoliovirus b, measles virusrubella virus d, and rotavirusVZV e-are not associated with cancers in humans, although adenoviruses cause cancer in some animals. 