Journal Article

Feline Injection-Site Sarcoma and Other Adverse Reactions to Vaccination in Cats

Thiry, Etienne, Addie, Diane D., Möstl, Karin, Lloret, Albert, Marsilio, Fulvio, Pennisi, Maria Grazia, Hartmann, Katrin, Boucraut-Baralon, Corine, Egberink, Herman, Hofmann-Lehmann, Regina, Tasker, Séverine, Hosie, Margaret J., Belák, Sándor, Frymus, Tadeusz, Truyen, Uwe

2023

Overview

Vaccine-associated adverse events (VAAEs), including feline injection-site sarcomas (FISSs), occur only rarely but can be severe. Understanding potential VAAEs is an important part of informed owner consent for vaccination. In this review, the European Advisory Board on Cat Diseases (ABCD), a scientifically independent board of feline medicine experts, presents the current knowledge on VAAEs in cats, summarizing the literature and filling the gaps where scientific studies are missing with expert opinion to assist veterinarians in adopting the best vaccination practice. VAAEs are caused by an aberrant innate or adaptive immune reaction, excessive local reactions at the inoculation site, an error in administration, or failure in the manufacturing process. FISS, the most severe VAAE, can develop after vaccinations or injection of other substances. Although the most widely accepted hypothesis is that chronic inflammation triggers malignant transformation, the pathogenesis of FISS is not yet fully understood. No injectable vaccine is risk-free, and therefore, vaccination should be performed as often as necessary, but as infrequently as possible. Vaccines should be brought to room temperature prior to administration and injected at sites in which FISS surgery would likely be curative; the interscapular region should be avoided. Post-vaccinal monitoring is essential.

• Publisher: MDPI AG,Multidisciplinary Digital Publishing Institute (MDPI),MDPI
• Subject: Adverse and side effects / adverse event / Allergens / ambient temperature / Anaphylaxis / Animals / Cat Diseases / Cat Diseases - etiology / Cats / Chlamydia / Clinical Science / Commerce / Diseases / Dogs / Drug dosages / Drugs / Edema / expert opinion / Fever / FISS / Genetic aspects / Growth / hypersensitivity reaction / immune response / immunization / Infectious Diseases / Inflammation / Injection / injection site / Inoculation / Klinisk vetenskap / Life sciences / Manufacturers / medicine / Médecine vétérinaire & santé animale / pathogenesis / Pharmacovigilance / Prevention / Pruritus / Rabies / Review / Risk factors / Sarcoma / Sarcoma - etiology / Sarcoma - veterinary / Sciences du vivant / side effect / surgery / VAAE / Vaccination / Vaccination - adverse effects / Vaccination - veterinary / vaccine / Vaccines / Veterinary medicine & animal health / Virology