Frequency of lesions suggestive of ocular toxoplasmosis among a rural population in the State of Rio de Janeiro

To determine the prevalence of ocular toxoplasmosis among the general population of the district of Santa Rita de Cassia, Barra Mansa, State of Rio de Janeiro, a cross-sectional study on 1,071 individuals was performed. These subjects underwent serological tests (anti-Toxoplasma IgG and IgM) and phy...

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Published inRevista da Sociedade Brasileira de Medicina Tropical Vol. 42; no. 2; p. 165
Main Authors Aleixo, Ana Luisa Quintella do Couto, Benchimol, Eliezer Israel, Neves, Elisabeth de Souza, Silva, Cassius Schnell Palhano, Coura, Léa Camillo, Amendoeira, Maria Regina Reis
Format Journal Article
LanguageEnglish
Portuguese
Published Brazil Sociedade Brasileira de Medicina Tropical 01.03.2009
Subjects
Adolescent
Adult
Age Distribution
Aged
Aged, 80 and over
Animals
Antibodies, Protozoan - blood
Brazil - epidemiology
Child
Child, Preschool
Cross-Sectional Studies
Female
Humans
Immunoglobulin G - blood
Immunoglobulin M - blood
Infant
Infant, Newborn
Lesions
Male
Middle Aged
Prevalence
Rural Population
Rural populations
Toxoplasma - immunology
Toxoplasmosis
Toxoplasmosis, Ocular - diagnosis
Toxoplasmosis, Ocular - epidemiology
Young Adult
Brazil
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Summary:To determine the prevalence of ocular toxoplasmosis among the general population of the district of Santa Rita de Cassia, Barra Mansa, State of Rio de Janeiro, a cross-sectional study on 1,071 individuals was performed. These subjects underwent serological tests (anti-Toxoplasma IgG and IgM) and physical and ophthalmological examinations. The diagnosis of presumed ocular toxoplasmosis was based on clinical and serological criteria and the appearance of the retinochoroidal lesion. The lesions were classified into three morphological types: 1. Limits marked with a halo of hyperpigmentation and an area of central chorioretinal atrophy; 2. Hypopigmented halo and hyperpigmented central area; and 3. Hyperpigmented or hypopigmented. The prevalence of healed lesions compatible with ocular toxoplasmosis was 3.8% among the general population and 5.8% among individuals who were seropositive for Toxoplasma gondii (65.9% of the individuals evaluated). Type-1 lesions (41.5%), female sex (68.3%), peripheral lesions (58.5%) and lesions smaller than three disc diameters predominated.
ISSN:0037-8682
1678-9849
DOI:10.1590/S0037-86822009000200014