Low predictive value of seroprevalence of Toxoplasma gondii in cattle for detection of parasite DNA

► Interpretation of serological findings for Toxoplasma gondii in cattle is difficult. ► Detection of parasitic DNA is limited to seronegative cattle. ► Seroprevalence is not an indicator of the number of cattle carrying parasites. ► Infectivity of beef from PCR-positive cattle is yet to be studied.