In the U.S., it is estimated that one to two percent of the general cat population are carriers of the feline leukemia virus. (scenichillsvet.com)
Results indicate that the prevalence of parasites in this study alone, based only on fecal exams, probably means a lot more parasites affect the general cat population. (tampabayvets.net)
About 1 - 2 % of the general cat population has leukemia. (1800petmeds.com)