IL1B and infection: aureus, Δlgt S. aureus induced low levels of PGE2, IL-1β, IL-6, IL-10, and IL-8 secretion into neutrophil supernatants after infection of neutrophils for 9 h at MOI 3:1 and MOI 10:1 (P < 0.01, P < 0.001, Figures 1A–E).