When sows were inoculated before birth with high doses of C. suis oocysts, no clinical signs or oocyst excretion were noticed but the levels of immunoglobulins (especially IgA) in their blood, colostrum and milk were correlated with a decrease in diarrhoea and oocyst excretion in their experimentally infected off spring compared to piglets from non-superinfected sows [35], indicating that application of oocysts to sows ante partum can confer at least partial protection against C. suis in piglets. Here, CD79A is linked to Diarrhea.