[Antibody avidity in diagnosis of toxoplasmosis].

Abstract

The sequential changes in avidity of antibodies to Toxoplasmosis gondii were investigated. The values of avidity were observed to be significantly lower in serum samples drawn in early stages of infection than 3-4 months later and increasing with time of duration of the infection. A correlation was found between antibody avidity and antibody level measured in international units (IU/l), whereas, no correlation was observed between avidity, IU/l and antibody titers.