Key result
Feline picornavirus infection in cats elicited complement fixation inhibiting antibodies during the acute stage and complement-fixing antibodies during the convalescent stage.
May aid feline infection staging; leaves open translation to other species or viruses.
Complement fixation inhibiting and complement-fixing antibodies were demonstrated in sera from cats during the acute and convalescent stages, respectively, of feline picornavirus infections. Complement-fixing antibody activity was present in 19S and 7S globulins, whereas complement fixation inhibiting antibody activity was confined to the 7S globulins. Sera with complement-fixing antibody and sera with complement fixation inhibiting antibody were also shown to have neutralizing and precipitating antibodies. In a study of antibody responses to homotypic and heterotypic strains of feline picornavirus, less serological cross-reactions were observed between strains of feline picornavirus in sera from cats in the acute phase of feline picornavirus infection than in the convalescent phase. The temporal relationship of complement fixation inhibiting and complement-fixing antibody responses of cats after acute viral respiratory infections is contrasted with previously observed antibody response in cats to feline leukemia virus.
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Olsen et al. (1974) studied Feline picornavirus infection. Feline picornavirus infection was evaluated on Antibody responses (complement fixation inhibiting and complement-fixing antibodies). Feline picornavirus infection in cats elicited complement fixation inhibiting antibodies during the acute stage and complement-fixing antibodies during the convalescent stage.
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