Seriously? Yes! Evidence is mounting that the common FVRCP (feline viral rhinotracheitis, calicivirus and paneleukopenia) vaccine may cause long-term damage to cats’ kidneys that increases with every booster. Here’s the report from Colorado State University:
The Center for Companion Animal Studies at Colorado State University has shown that cats vaccinated with FVRCP vaccines grown on Crandell-Rees Feline Kidney (CRFK) cell lines can develop antibodies to renal proteins, and that cats hypersensitized to CRFK cell lysates can develop interstitial nephritis…Cats administered FVRCP vaccines parenterally (by injection) have higher levels of circulating antibodies to these antigens than do cats who were administered a FVRCP vaccine for intranasal administration.