Related Experiment Video
Updated: Oct 10, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
[Factors associated with Streptococcus group B colonization in pregnant women in Los Altos, Chiapas]
M Ocampo-Torres1, H J Sánchez-Pérez, A Nazar-Beutelspacher
1Colegio de la Frontera Sur, Unidad San Cristóbal de las Casas, Chiapas, México. mocampo@sclc.ecosur.mx
Objective:
To estimate the prevalence and analyze the factors associated with group B Streptococcus (GBS) colonization in pregnant women of Los Altos, Chiapas, Mexico.
Material And Methods:
Between February and September 1999, a cross-sectional study was conducted among 910 women who sought delivery care at three public hospitals of San Cristobal de Las Casas, Chiapas. Vaginal and perianal samples were taken for GBS detection by bacteriological culture. Identification of groups and serotypes was performed using latex agglutination. The analysis of factors associated with colonization was done using chi-squared tests and log-linear modeling.
Results:
GBS colonization was found in 8.6% (95% CI 6.8-10.5) of study subjects. Women with the greatest likelihood of colonization were those with > or = 5 pregnancies, residents of counties with high levels of poverty, working outside the home, and living in homes in which the head of household worked in agriculture (26.8%, OR = 7.25, 95% CI 1.83-28.67).
Conclusions:
In the study area, it is necessary that actions aiming to prevent and control infections by GBS be directed principally at those groups of women with the highest probability of colonization, in order to diminish the perinatal transmission of GBS.
Related Concept Videos
Development of the Oral Microbiota
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
Development of Human Microbiota
Amebiasis
Determinants of Bacterial Pathogenicity and Virulence
Streptococcal Pharyngitis