Cornell researchers identified a deadly feline coronavirus variant in the United States that has circulated for over a decade. Scientists previously linked this variant exclusively to a 2023 outbreak in Cyprus that killed thousands of cats. The discovery reveals the virus spread far beyond the Mediterranean island.
The variant causes feline infectious peritonitis, a fatal disease in cats. Its presence in the US suggests undetected infections have persisted in American cat populations for years without triggering the massive die-offs seen in Cyprus. Researchers sequenced viral genomes to trace the outbreak's origins and geographic spread.
The finding raises alarms about future large-scale epidemics among vulnerable cats, particularly in shelters and multi-cat households where the virus spreads rapidly. Health officials now face pressure to develop better surveillance systems for detecting feline coronavirus variants before they explode into widespread outbreaks.
Next steps include broader testing of US cat populations to map the virus's current distribution. Researchers also plan to investigate why the Cyprus outbreak proved so catastrophic while American infections remained contained. Understanding these differences could guide prevention strategies for shelters and inform cat owners about infection risks.