IL1B and infection: The same results after infection with L. europaeus—genotype GI.1—was reported by Marques et al. [41], showing an increase in IL-1 (up to 18 hpi) and Trzeciak-Ryczek et al. [38], showing a decrease in IL-1β (8 hpi, and 24 and 28 hpi) in peripheral blood leukocytes.