Prevalence of <i>Streptococcus agalactiae</i> colonization in a sample of pregnant and non pregnant women in Porto Alegre, Rio Grande do Sul state, Brazil

  • Fabiana Schmidt Kiss Centro Universitário Metodista IPA
  • Juliane da Silva Rossato Centro Universitário Metodista IPA
  • Márcia Silveira Graudenz Instituto de Patologia de Porto Alegre
  • Lucila Ludmila Paula Gutierrez Centro Universitário Metodista IPA
Keywords: STREPTOCOCCUS AGALACTIAE, STREPTOCOCCUS GROUP B, PREVALENCE, CROSS SECTIONAL STUDIES, PREGNANT WOMEN.

Abstract

AIMS: To determine the prevalence of Streptococcus agalactiae in vaginal and rectal samples of pregnant and non-pregnant women, analyzed in a private laboratory in Porto Alegre, Rio Grande do Sul state, Brazil, from January 2011 to June 2012. METHODS: The study included all culture results of vaginal and anorectal samples collected from pregnant and non-pregnant women, aged 18 years or more, from January 2011 to June 2012, in a private laboratory in the city of Porto Alegre. The samples were plated on blood agar and chromogenic specific for S. agalactiae, being analyzed in the CAMP test for samples with positive bacterial growth. Statistical analysis was performed using the chi-square and p values less than 0.05 were considered significant. RESULTS: We analyzed 1146 samples, being 963 of 2011 and 183 of the first half of 2012, of which 105 were from pregnant and 1041 and were from non-pregnant women. Among the 1146 women surveyed, 83 (7.2% - 95% confidence interval: 5.8%-8.8%) were colonized with S. agalactiae. There was a higher frequency of positive samples in the group of pregnant women (15.2%) than in the group of non-pregnant women (6.4%) (p equals 0.002). This difference is mainly due to the results of the year 2012, when the pregnant group had 23.1% of positive samples, while the non-pregnant group had 6.3% (p equals 0.004). CONCLUSIONS: The high incidence of colonization by S. agalactiae among the pregnant women screened emphasizes the importance of detecting this colonization in late pregnancy for the effective prevention of neonatal streptococcal disease.

Downloads

Download data is not yet available.

Author Biographies

Fabiana Schmidt Kiss, Centro Universitário Metodista IPA
Acadêmica de Biomedicina, Centro Universitário Metodista do IPA, Porto Alegre (RS) – Brasil
Juliane da Silva Rossato, Centro Universitário Metodista IPA
Biomédica, Professora MSc., Centro Universitário Metodista do IPA, Porto Alegre (RS) – Brasil
Márcia Silveira Graudenz, Instituto de Patologia de Porto Alegre
Médica Patologista e Citologista do Instituto de Patologia de Porto Alegre (RS) – Brasil
Lucila Ludmila Paula Gutierrez, Centro Universitário Metodista IPA
Graduação em Farmácia pela Universidade Federal do Rio Grande do Sul(2000), graduação em Bioquímica em Análises Clínicas pela Universidade Federal do Rio Grande do Sul(2001), mestrado em Ciências Biológicas (Fisiologia) pela Universidade Federal do Rio Grande do Sul(2002), doutorado em Ciências Biológicas (Fisiologia) pela Universidade Federal do Rio Grande do Sul(2007). Atualmente é Professor Titular do Centro Universitário Metodista. Tem experiência na área de Fisiologia, com ênfase em Fisiologia de Órgãos e Sistemas.
Published
2013-10-19
How to Cite
Kiss, F. S., Rossato, J. da S., Graudenz, M. S., & Gutierrez, L. L. P. (2013). Prevalence of <i>Streptococcus agalactiae</i> colonization in a sample of pregnant and non pregnant women in Porto Alegre, Rio Grande do Sul state, Brazil. Scientia Medica, 23(3), 169-174. Retrieved from https://revistaseletronicas.pucrs.br/ojs/index.php/scientiamedica/article/view/14265
Section
Original Articles