The age of animals whose monocytes had higher IL-10 transcription post infection than mock infection was significantly lower at 3 hpi and 6 hpi compared to 9 hpi, when examined by univariate analysis (3 hpi: t = 4.054, p < 0.001, 6 hpi: t = 4.054, p < 0.001, 9 hpi: t = 2.255, p = 0.185). Here, IL10 is linked to infection.