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Duration of immunity in cats after vaccination or naturally acquired infection
  1. M. J. Coyne, VMD, PhD1,
  2. J. H. H. Burr, DVM2,
  3. T. D. Yule, PhD3,
  4. M. J. Harding, DVM, PhD3,
  5. D. B. Tresnan, DVM, PhD3 and
  6. D. McGavin, BVSc, PhD3
  1. 1 Animal Health Group, Pfizer Inc, 235 East 42nd Street, New York, NY 10017, USA
  2. 2 Pfizer Animal Health, North American Region, 812 Springdale Drive, Exton, PA 19341, USA
  3. 3 Animal Health Biological Discovery, Pfizer Central Research, Eastern Point Road, Groton, CT 06340, USA
  1. 265 Penns Grove Road, Oxford, PA 19363, USA
  2. Section of Comparative Medicine, Yale University School of Medicine, PO Box 208016, New Haven, CT 06520-8016, USA

Abstract

The necessity for cats to be vaccinated annually against common pathogens has been questioned because sarcomas have infrequently been reported at the injection site. However, with few exceptions, the duration of immunity induced by vaccination or infection is uncertain, and there may therefore be a risk associated with a decision not to revaccinate. This article reviews the information available about the duration of immunity induced by vaccination or infection in cats, and reveals many shortcomings that make blanket recommendations impossible. Each vaccine must be considered individually.

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