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Anti-''Toxoplasma gondii'' antibodies can be deteceted in the maternal circulation from thirty days post-infection. However, in an outbreak of abortions, action may nned to be taken before this point.
Anti-''Toxoplasma gondii'' antibodies can be deteceted in the maternal circulation from thirty days post-infection. However, in an outbreak of abortions, action may nned to be taken before this point.
IgM antibodies appear sooner after infection than IgG antibodies but generally do not persist past 3 mo after infection. Increased IgM titers (>1:256) are consistent with recent infection. In contrast, IgG antibodies appear by the fourth week after infection and may remain increased for years during subclinical infection. To be useful, IgG titers must be measured in paired sera from the acute and convalescent stages (3-4 wk apart) and must show at least a 4-fold increase in titer.
===Pathology===
===Pathology===