Feline injection site sarcomas (original) (raw)

Feline injection site sarcomas have been linked to the administration of certain vaccines, particularly feline leukemia virus (FeLV) and rabies vaccines, with evidence suggesting an increased risk associated with multiple vaccinations at a single site. Fatal outcomes from these sarcomas raise concern about vaccination practices in cats, leading to recommendations to limit the number of injections at a given location. The development timeline for these tumors can range significantly, from two months to ten years post-vaccination, emphasizing the need for continued monitoring and research to understand the underlying mechanisms and risk factors.