International Journal of Epidemiology, Vol 26, 428-435, Copyright © 1997 by International Epidemiological Association
Z Szenasi, Z Ozsvar, E Nagy, M Jeszenszky, J Szabo, J Gellen, M Vegh and C Verhofstede
BACKGROUND: Toxoplasma gondii infection of the fetus can only be discovered
or prevented by the appropriate serological screening and subsequent
treatment of the mother and her offspring. In Hungary, there is no
obligatory toxoplasma screening for pregnant women and both the reporting
and follow-up of congenital toxoplasmosis cases is limited. In 1987 we
started a systematic study in the Szeged region of Hungary, in which all
pregnant women were screened and appropriate treatment given to all mothers
and their offspring where congenital toxoplasmosis was suspected. METHODS:
All pregnant women were routinely screened within the first 16 weeks of
gestation for toxoplasma antibodies by complement fixation test (CFT).
Seronegative cases were retested for possible seroconversion every second
month. Patients with CFT titres > or = 1:256 were retested for anti-P30
immunoglobulin A (IgA), IgM and IgG antibodies by ELISA and/or
SDS-PAGE-Western immunoblot in order to distinguish the acute and chronic
phases of the infection. RESULTS: Up to the end of 1994, the sera of 17,735
gravidae were screened. Ten women were found to have seroconverted during
pregnancy and 78 had high initial antibody levels accompanied by anti-P30
IgA antibodies at the very first screening. These two groups together were
considered as definitely (10) or possibly (78) infected with Toxoplasma
during pregnancy and were treated with Spiramycin. All of their offspring
were also treated for one month and followed-up by systematic serological
and clinical screening for 2 years. No congenital toxoplasmosis was found
in any of the offspring. CONCLUSIONS: Antenatal, early diagnosis and
treatment of toxoplasmosis in mothers, together with treatment and
follow-up of their offspring, may considerably reduce the incidence of the
disease in the offspring.
ARTICLES
Prevention of congenital toxoplasmosis in Szeged, Hungary
Department of Clinical Microbiology, Albert Szent-Gyorgyi Medical University, Szeged, Hungary.
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