Assessment of heterologous lumpy skin disease vaccine-induced immunity in pregnant cattle vaccinated at different times of gestation period and their influence on maternally derived antibodies.

The present study aimed to evaluate the cell-mediated and the humoral immune response to Romanian sheep pox vaccine in pregnant cows (n = 12) vaccinated at different times of gestation period and the duration of maternal immunity in calves born to these cows. Evaluation of cellular immunity revealed an increase in lymphocytic proliferation that peaked at 10th day post vaccination (dpv) then gradually decreased. Capripoxvirus-specific antibodies were detected by SNT and ELISA in sera collected from vaccinated dams and also in calves born to these cows.