Prevalence of acute toxoplasmosis infection among 41112 pregnant women and the mother-to-child transmission rate in a public hospital in South Brazil
Mem. Inst. Oswaldo Cruz
;
104(2): 383-388, Mar. 2009. tab, ilus
Article
in English
| LILACS
| ID: lil-533533
ABSTRACT
Untreated acute toxoplasmosis among pregnant women can lead to serious sequelae among newborns, including neurological impairment and blindness. In Brazil, the risk of congenital toxoplasmosis (CTox) has not been fully evaluated. Our aim was to evaluate trends in acute toxoplasmosis prevalence from 1998-2005, the incidence of CTox and the rate of mother-to-child transmission (MTCT). A cross-sectional study was undertaken to dentify patients who fit the criteria for acute toxoplasmosis during pregnancy. Exposed newborns were included in a historical cohort, with a median follow-up time of 11 months, to establish definite diagnosis of CTox. Diagnoses for acute infection in pregnancy and CTox were based on European Research Network on Congenital Toxoplasmosis criteria. In 41,112 pregnant women, the prevalence of acute toxoplasmosis was 4.8/1,000 women. The birth prevalence of CTox was 0.6/1,000 newborns [95 percent confidence interval (CI): 0.4-0.9]. During the follow-up study, 12 additional cases were detected, increasing the CTox rate to 0.9/1,000 newborns (95 percent CI: 0.6-1.3). Among the 200 newborns exposed to Toxoplasma gondii,there were 37 babies presenting diagnostic criteria of CTox, leading to an MTCT rate of 18.5 percent (95 percent CI: 13.4-24.6 percent). The additional cases identified during follow-up reinforce the need for serological monitoring during the first year of life, even in the absence of evidence of congenital infection at birth.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Toxoplasmosis
/
Pregnancy Complications, Parasitic
/
Infectious Disease Transmission, Vertical
Type of study:
Diagnostic study
/
Incidence study
/
Observational study
/
Prevalence study
/
Prognostic study
/
Risk factors
Limits:
Animals
/
Female
/
Humans
/
Pregnancy
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2009
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Grupo Hospitalar Conceição/BR
/
Universidade Federal do Rio Grande do Sul/BR
Similar
MEDLINE
...
LILACS
LIS