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Rodrigo S. Garcés Torres, Benjamín E. Alcántar Hernández, Kelly Helmick
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Protective antibody titers against core vaccines have not been standardized for cheetahs (Acinonyx jubatus) under human care. Vaccine-induced disease has been suspected after administration of modified live virus vaccine (MLVV), but it has not been confirmed as the causative agent. MLVV and killed virus vaccines (KVV) elicit humoral response in cheetahs; however, the use of both vaccines for initial immunization in cheetah cubs <6 months old within the same population has not been reported. The current case series describes viral disease presentation in two cheetah litters after using both vaccines and presents results for serum neutralization titers against feline calicivirus (FCV) and feline herpesvirus-1 (FHV-1) and hemagglutination inhibition titers against feline panleukopenia virus (FPV). For Litter 1, MLVV was administered at 6 and 9 wk old. On week 11, one male developed ocular, oral, and dermal lesions. Viral isolation recovered FCV. Because of suspected vaccine-induced FCV, KVV was administered on weeks 13 and 16. Litter 2 was vaccinated with KVV via the same vaccination schedule. Fifty-three days after the last booster, two cubs presented with ocular, respiratory, and oral clinical signs; both were PCR positive for FHV-1. Serology reported a better anamnestic response and protective titers against FCV and FPV with the protocol used with Litter 1. In Litter 2, FCV and FHV-1 titer measurement failed in three of four cubs, limiting comparison of titers between litters. In spite of limited measurements, absence of a statistical evaluation, and presence of infection, serology showed a better humoral response when MLVV was used.

Rodrigo S. Garcés Torres, Benjamín E. Alcántar Hernández, and Kelly Helmick "POSTVACCINAL VIRAL DISEASE PRESENTATION IN TWO LITTERS OF CHEETAHS (ACINONYX JUBATUS)," Journal of Zoo and Wildlife Medicine 54(1), 185-191, (20 March 2023).
Accepted: 14 December 2022; Published: 20 March 2023
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