A retrovirus is quietly resurfacing in cat populations.

Feline Leukemia Virus (FeLV) has never truly disappeared—it only went quiet. Now, new testing data from shelters and regional studies show it’s resurfacing, especially in areas with high stray cat density or uneven vaccination coverage. Because FeLV spreads through close contact and can lie dormant for years, outbreaks build slowly before anyone notices. Many owners assume the risk is gone, but veterinarians warn the opposite. Early detection and consistent prevention are once again critical for protecting both household pets and entire feline communities.



