Crosstalk between innate and adaptive immune responses to infectious bronchitis virus after vaccination and challenge of chickens varying in serum mannose-binding lectin concentrations

► Serum MBL levels influence the ability of chickens to clear the respiratory tract for virus genomes after an infectious bronchitis virus (IBV) infection. ► Serum levels influence IBV vaccine-induced changes in circulating T-cell populations. ► Addition of mannose to a IBV vaccine alter the vaccine-induced immune response.