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  • Title: Efficacy of a new inactivated Chlamydophila felis vaccine in experimentally-infected cats.
    Author: Masubuchi K, Wakatsuki A, Iwamoto K, Takahashi T, Kokubu T, Shimizu M.
    Journal: J Feline Med Surg; 2010 Aug; 12(8):609-13. PubMed ID: 20472483.
    Abstract:
    A new inactivated and adjuvanted Chlamydophila felis vaccine was developed and its efficacy in cats was compared with that of commercially available inactivated and live vaccines. Two commercial vaccines conferred insufficient immunity on inoculated cats, as evaluated by antibody production and a challenge experiment, whereas cats administered the newly generated vaccine produced high-titre antibodies and acquired sufficient immunity. The cats immunised with the new vaccine revealed no or only mild clinical signs, and no chlamydiae were recovered from their tissue samples after exposure to a virulent C felis. However, they shed chlamydiae in their nasal and conjunctival secretions after challenge, as did those immunised with the commercial vaccines and the non-vaccinated controls. The newly developed vaccine caused no adverse reaction in the inoculated cats. These findings suggest that the new vaccine prepared here may be promising for practical use in controlling C felis infection in cats.
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