Trichomonas Vaginalis infection among women attending in the public service in Rio Grande do Sul, Brazil

frequency, risk factors and clinical signs

Authors

  • Mirian Pinheiro Bruni
  • Ângela Sena Lopes
  • Dulce Stauffert
  • Carolina Caetano dos Santos
  • Nilton da Cunha Filho
  • Luciana Siqueira Silveira dos Santos
  • Laura Maria Jorge de Faria Santos
  • Mariângela Freitas da Silveira
  • Nara Amélia da Rosa Farias

Keywords:

Trichomonas vaginalis, diagnosis, Trichomonas infections, risk factors

Abstract

Introduction: Trichomoniasis is a cosmopolitan disease that can affect the female fertility, and is commonly underdiagnosed, both in private practices and in public health services, because of the low sensitivity of the wet mount exam used routinely. Objective: To understand the occurrence of T. vaginalis infection by means of in vitro culture in women receiving care in a public health unit, in the city of Pelotas, Rio Grande do Sul, Brazil, as well as to identify the possible risk factors associated with this infection. Methods: Cross‑sectional study was carried out, which included 201 women undergoing interview and gynecological exam, with the collection of vaginal discharge in the Gynecology Ambulatory at the School of Medicine of Universidade Federal de Pelotas. The material collected was examined in the form of fresh smears and cultivated in Diamond’s medium. Epidemiological data were obtained by means of patient interviews and clinical trials, from the medical records. The results were statistically analyzed through χ2 and Fisher’s exact tests, using version 9.0 of the Statistix program. Results: The occurrence of T. vaginalis infection was 7% (14/201). In the wet mount exam, used routinely for the diagnosis of this agent, only 42.85% of the infected women (6/14) were positive. It was noted that 21.4% of the infected women were asymptomatic, and 89.05% were not aware of the existence of the Trichomonas vaginalis infection. Factors independently associated with the infection were the smoking habit (odds ratio [OR] = 11.8), not having a stable sexual partner (OR = 6.36), presence of vaginal discharge with odor (OR = 5.65), and altered vaginal microbiota (OR = 5.31). Conclusion: T. vaginalis infection was present among the women studied, being underestimated because of the diagnostic technique, and because many of them were asymptomatic. The smoking habit, not having a stable sexual partner, having fetid discharge, and altered vaginal microbiota are the risk factors for infection

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Author Biographies

Mirian Pinheiro Bruni

Pharmacist. Master’s student in the Postgraduate Program in Parasitology, Biology Institute, Universidade Federal de Pelotas (UFPel) – Pelotas (RS), Brazil.

Ângela Sena Lopes

Pharmacist. PhD student in the Postgraduate Program in Parasitology, Biology Institute, UFPel – Pelotas (RS), Brazil.

Dulce Stauffert

Pharmacist. PhD in Parasitology, UFPel – Pelotas (RS), Brazil.

Carolina Caetano dos Santos

Undergraduate student in Biological Sciences, UFPel – Pelotas (RS), Brazil

Nilton da Cunha Filho

Biologist. PhD in Parasitology, UFPel – Pelotas (RS), Brazil.

Luciana Siqueira Silveira dos Santos

Biologists. PhD students in the Postgraduate Program in Parasitology, Biology Institute, UFPel – Pelotas (RS), Brazil.

Laura Maria Jorge de Faria Santos

Biologists. PhD students in the Postgraduate Program in Parasitology, Biology Institute, UFPel – Pelotas (RS), Brazil.

Mariângela Freitas da Silveira

Physician. Associate Professor, School of Medicine, UFPel – Pelotas (RS), Brazil.

Nara Amélia da Rosa Farias

Veterinarian. Professor, Postgraduate Program in Parasitology, Biology Institute, UFPel – Pelotas (RS), Brazil

Published

2022-04-20

How to Cite

Bruni, M. P., Lopes, Ângela S., Stauffert, D., Santos, C. C. dos, Cunha Filho, N. da, Santos, L. S. S. dos, Santos, L. M. J. de F., Silveira, M. F. da, & Farias, N. A. da R. (2022). Trichomonas Vaginalis infection among women attending in the public service in Rio Grande do Sul, Brazil: frequency, risk factors and clinical signs. Brazilian Journal of Sexually Transmitted Diseases, 27(3-4), 79–91. Retrieved from https://bjstd.org/revista/article/view/742

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Original Article