Forty two psittacines from several other imports were all negative. A group of each were revaccinated after two weeks with live or inactivated vaccine. Antibody Response to NDV Vaccination and Challenge in 48 Budgerigars. Antibody Response to NDV Vaccination in 15 African Gray Parrots. Immunocomb NDV Test of Vaccinated Cockatiels.
Average titre score.
In African Gray Parrots the HI titer was 5.6 with chicken erythrocytes and 6.6 with psittacine erythrocytes. Budgerigars were still IC negative and had a mean HI titer of 0 with chicken erythrocytes and 0.8 with psittacine erythrocytes. Discussion Based upon the conclusions of this study, routine screening for NDV in imported psittacine birds has been adopted by the Israel Veterinary Services via the Immunocomb method. Quarantine stations obtain samples from five birds per species in all shipments which are tested. It can be concluded that IC testing also can be applied as a diagnostic tool for monitoring NDV vaccinations in psittacines.