Veterinary Technician National Exam (VTNE) Practice Exam

Vaccine-associated sarcomas in cats are primarily linked to which two vaccines?

1. FeLV and Feline Panleukopenia vaccines

2. FeLV and Rabies vaccines

3. Feline Calici/Herpes and Panleukopenia vaccines

4. Rabies and Feline Panleukopenia vaccines

The correct answer is: FeLV and Rabies vaccines

Vaccine-associated sarcomas are a significant concern when it comes to feline vaccinations, particularly in relation to certain vaccines. The two vaccines primarily linked to the development of these sarcomas in cats are the Feline Leukemia Virus (FeLV) and the Rabies vaccines. Research has demonstrated that these specific vaccines are associated with a higher incidence of fibrosarcomas, which are malignant tumors that can arise at the site of injection. The mechanism behind this association is believed to be related to the inflammatory response that these vaccines can provoke, leading to a cascade of cellular changes that may culminate in tumor formation over time. While the other options include vaccines that are essential for feline health, they are not typically associated with vaccine-related sarcomas. The emphasis on FeLV and Rabies vaccines highlights the ongoing need for veterinarians to balance the benefits of vaccination with the potential risks, and to take precautions such as selecting appropriate locations for vaccine administration to minimize the risk of development of sarcomas. Identifying and understanding the implications of these associations helps veterinary professionals provide informed guidance to pet owners regarding vaccine protocols.