Feline coronaviruses (FCoVs) exist primarily as two serotypes: Serotype-1 (FCoV1) and Serotype-2 (FCoV2). FCoV1 is more prevalent but difficult to culture than FCoV2, though both can mutate into the lethal Feline Infectious Peritonitis Virus (FIPV). The study addresses the lack of effective vaccines that cross-protect against FCoV1, as current commercial options are based on the easier to culture FCoV2. By leveraging comparative virology, the authors explore a "minimized" pan

This paper falls within the fields of medical mycology, immunology, and vaccinology, specifically addressing the emerging application of mRN