Vaccine for immunizing cats against toxoplasma oocyst shedding

Details Vaccine for immunizing cats against toxoplasma oocyst shedding Vaccine for immunizing cats against toxoplasma oocyst shedding

A - Human Necessities

61

K

A61K 39/00 (2006.01) A61K 39/002 (2006.01)

Patent

CA 2063438

2063438 9100740 PCTABS00003 A new mutant strain vaccine, and a corresponding method of immunization, against Toxoplasma in cats is provided which makes use of a reproductively deficient strain of T. gondii, designated T-263. Bradyzoites in tissue cysts from laboratory animals infected with the mutant were fed to cats, which developed immunity against subsequent T. gondii challenge without concomitant shedding of infectious oocysts. The new vaccine eliminates the need for chemoprophylaxis subsequent to primary infection.

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