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  • Author or Editor: Glenna M. Gobar x
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Abstract

Objective—To quantify incidence of vaccination practices, postvaccinal reactions, and vaccine site-associated sarcomas in cats.

Design—Epidemiologic survey.

Animals—31,671 cats vaccinated in the United States and Canada by veterinarians with World Wide Web access.

Procedure—Veterinarians used secure Web-based survey forms to report data regarding administered vaccines, postvaccinal inflammatory reactions, vaccine site-associated sarcomas, and detailed information and history on each sarcoma. Data were collected from Jan 1, 1998 to Dec 31, 2000, allowing a 1- to 3-year follow-up of vaccinated cats.

Results—Participants reported administering 61,747 doses of vaccine to 31,671 cats; postvaccinal inflammatory reactions developed in 73 cats (11.8 reactions/ 10,000 vaccine doses), and qualifying vaccine site-associated sarcomas developed in 2 cats (0.63 sarcomas/10,000 cats; 0.32 sarcomas/10,000 doses of all vaccines).

Conclusions and Clinical Relevance—These findings indicate that the incidence of vaccine site-associated sarcomas is low and is not increasing. Thoughtful consideration of the relative risks and benefits of specific vaccines remains the best means of reducing the incidence of sarcomas. It is not necessary to remove postvaccinal granulomas unless malignant behavior is apparent or they persist > 4 months. (J Am Vet Med Assoc 2002;220:1477–1482)

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in Journal of the American Veterinary Medical Association

Objective

To develop a prototype program for surveillance of causes of death of dogs, using resources developed for the World Wide Web, to enable collection of data from veterinarians in small animal practice and dissemination of results in a timely manner at minimal expense.

Design

Epidemiologic survey.

Sample Population

Small animal veterinarians who were members of NOAH, Veterinary Information Network (VIN), or VetPlus-L.

Procedure

Internet electronic communications and Web pages were used for solicitation and collection of data, dissemination of results, and follow-up discussions with participants. Data were stored in a relational database.

Results

25 veterinarians actively submitted case material. On the basis of analysis by region and school of veterinary medicine attended, these veterinarians were representative of all small animal practitioners in the United States. During the 6-month study, 621 case reports were submitted. Analysis of results included determination of number of dogs, with proportions calculated for primary reason for death, primary clinical sign, and breed, as well as creation of a map depicting distribution of the practitioners. Additional data were obtained for analysis to provide information of interest.

Clinical Implications

A national database representative of dogs examined by small animal practitioners would be a valuable source of information. Rapidly and easily accessible return of information and results is important for any surveillance system. The program described here appears to be a successful method for collecting data from practitioners. (J Am Vet Med Assoc 1998;213:251-256)

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in Journal of the American Veterinary Medical Association

Abstract

Objective—To determine whether particular vaccine brands, other injectable medications, customary vaccination practices, or various host factors were associated with the formation of vaccine-associated sarcomas in cats.

Design—Prospective multicenter case-control study.

Animals—Cats in the United States and Canada with soft tissue sarcomas or basal cell tumors.

Procedure—Veterinarians submitting biopsy specimens from cats with a confirmed diagnosis of soft tissue sarcoma or basal cell tumor were contacted for patient medical history. Time window statistical analyses were used in conjunction with various assumptions about case definitions.

Results—No single vaccine brand or manufacturer within antigen class was found to be associated with sarcoma formation. Factors related to vaccine administration were also not associated with sarcoma development, with the possible exception of vaccine temperature prior to injection. Two injectable medications (long-acting penicillin and methyl prednisolone acetate) were administered to case cats more frequently than to control cats.

Conclusions and Clinical Relevance—Findings do not support the hypotheses that specific brands or types of vaccine within antigen class, vaccine practices such as reuse of syringes, concomitant viral infection, history of trauma, or residence either increase or decrease the risk of vaccineassociated sarcoma formation in cats. There was evidence to suggest that certain long-acting injectable medications may also be associated with sarcoma formation. (J Am Vet Med Assoc 2003;223:1283–1292)

Full access
in Journal of the American Veterinary Medical Association