[Epidemiological and clinicoimmunological monitoring of toxoplasmosis in the Omsk Region].

The toxoplasmosis epidemiological surveillance system is being improved in the Omsk Region. The prevalence of toxoplasmosis has been analyzed among 31475 inhabitants from the Omsk Region over 15 years (from 1992 to 2006). There was a 1.7-2.5-fold increase in the rates of infection in the normal and abnormal pregnancy women. IgM was detected in 7% of the adult patients with suspected toxoplasmosis, 5.2% of the physiological pregnancy women, and 2.2 times more frequently (p < 0.01) in the pregnant women with threatening interruption. The study of avidity showed that in pregnant females, primary infection occurred in 4.2% of cases; the signs of subacute toxoplasmosis were noted in 6.09%. The IgA detection rate was 33%. IgM was found in 7.2% of children, 7.8% having low-avidity antibodies. Subacute toxoplasmosis was established in 10.4% of the patients with central nervous system and eye lesions or hepatitis. In 38.1% of cases, toxoplasmosis was concurrent with active cytomegalovirus infection. The authors show it expedient to determine IgA and its avidity and to detect Toxoplasma antigens, as well as antibodies to different Toxoplasma antigens.