BackgroundChlamydia trachomatis is the most prevalent bacterial sexually transmitted infection (STI) in the world. Approximately 80% of infected women are asymptomatic, although this infection can lead to serious complications in the female reproductive tract. Few data on Chlamydia infection are available in rural Amazonian communities.ObjectivesTo evaluate the prevalence of sexual C. trachomatis infection in women from Marajó Archipelago communities in the Amazon region of Brazil and to identify associated factors and genotypes.MethodsWe utilized amplification of the ompA gene by nested PCR. Positive samples were genotyped by sequencing. Study participants completed a questionnaire on social, epidemiological, and reproductive health variables. A Poisson regression was used to evaluate the degree of association of these variables with the infection.ResultsThe sexual infection by C. trachomatis was observed in 4% (16/393) of the subjects, and was more often found in women aged ≤25 (14.3%; 95% CI = 2.83–35.47; p <0.001), and in women with a household income of less than one Brazilian monthly minimum wage (5.2%; 95% CI = 1.33–11.37; p = 0.014). The ompA gene was sequenced in 13 samples, revealing F genotypes (38.4%, n = 5), D (23%, n = 3), E (15.3%, n = 2), Ia (7.6%, N = 1), J (7.6%, n = 1) and B (7.6%, n = 1).ConclusionsWe recorded a high prevalence of sexual infection by C. trachomatis in young and poor women from the interior of the Brazilian Amazon. This high prevalence and the frequencies of the main genotypes were similar to those found in major Brazilian urban centers. Our results reinforce the importance of the screening of this neglected infection, and the prevention of later sequelae in young women from rural and urban areas of Brazil.
RESUMOOBJETIVOS: Descrever a prevalência e os fatores associados à infecção endocervical por Chlamydia trachomatis em estudantes de uma universidade da capital e de três de seus campi do interior do estado do Pará, Amazônia, Brasil. MATERIAIS E MÉTODOS: Estudo transversal, com mulheres de idade igual ou superior a 18 anos, que realizaram o preventivo do câncer do colo uterino, de setembro de 2010 a outubro de 2014. O DNA da secreção cérvico-vaginal foi extraído pelo método fenol-clorofórmio e submetido à amplificação dos genes da β-globina humana e ompA de C. trachomatis por reação em cadeia da polimerase. Foram utilizados os testes de Mann-Whitney, estimação da proporção e odds ratio para análises estatísticas. O p ≤ 0,05 foi considerado estatisticamente significativo para um intervalo de confiança (IC) de 95%. RESULTADOS: A prevalência de C. trachomatis foi de 11,9% [54/454 (IC 95% 8,9-14,9)]. A infecção foi identificada em 10,4% [36/345 (IC 95% 7,2-13,7)] das estudantes da Capital e em 16,5% [18/109 (IC 95% 10,3-24,6)] das estudantes dos campi do interior (p = 0,12), sendo de 7,1% (2/28) no Interior 1, 22,2% (6/27) no Interior 2 e 18,5% (10/54) no Interior 3. Não foi observada associação entre as variáveis investigadas e a infecção endocervical por C. trachomatis. CONCLUSÃO: A prevalência da infecção por C. trachomatis entre as universitárias se assemelhou à média encontrada no Brasil e não se mostrou associada às condições sociodemográficas e comportamentais das universitárias investigadas. ARTIGO ORIGINAL | ORIGINAL ARTICLEABSTRACT OBJECTIVES: To describe the prevalence and factors associated with endocervical infection by Chlamydia trachomatis in students from a university in the capital and three campuses in inland towns of Pará State, Amazon, Brazil. MATERIALS AND METHODS: A cross-sectional study with women aged 18 years or older who underwent cervical cancer prevention from September 2010 to October 2014. DNA from cervicovaginal secretion was extracted using the phenol-chloroform method and subjected to the amplification of the human β-globin and ompA genes of C. trachomatis by polymerase chain reaction. Mann-Whitney tests, proportion estimation, and odds ratio were used for statistical analysis. The p ≤ 0.05 was considered statistically significant for a confidence interval (CI) of 95%. RESULTS: The prevalence of C. trachomatis was 11.9% ]. Infection was identified in 10.4% [36/345 (95% CI 7.2-13.7)] of the students in the Capital and in 16.5% ) of students from the campuses in the inland towns (p = 0.12), with 7.1% (2/28) in the Town 1, 22.2% (6/27) in the Town 2, and 18.5% (10/54) in the Town 3. No association between the investigated variables and the endocervical infection by C. trachomatis was observed. CONCLUSION: The prevalence of C. trachomatis infection among those university students was similar to the average found in Brazil and was not associated with the sociodemographic and behavioral conditions of the university students investigated.
Background The Human Papillomavirus (HPV) and Chlamydia trachomatis are the most prevalent Sexually Transmitted Infections (STIs) worldwide, and are associated cervical cancer and pelvic inflammatory disease, respectively. However, 80% of women testing positive are asymptomatic. In the Amazon region, young women, in particular, are widely exposed to the infections and their consequences. Objectives Determine the prevalence of sexual infection by HPV and C. trachomatis in young, sexually-active women treated at a university health program in a large city of the Brazilian Amazon region. Methods We amplified the L1 gene of HPV. We amplified ompA gene of C. trachomatis by nested PCR, and the study participants filled in a questionnaire on their social, epidemiological, and reproductive health characteristics. The data were analyzed using the Odds Ratio, to evaluate the degree of association of these variables with the observed infections. Results The prevalence of infection by HPV was 15.5% (47/303). This infection was recorded in 32.2% of the women of less than 25 years of age (OR:3.02 [CI95%] = 1.32–6.92; p = 0.014), 17.9% of the single women (OR: 2.41 [CI95%] = 1.22–4.75; p = 0.014), 23.8% of the women that reported having first sexual intercourse at less than 15 years of age (OR: 2.22 [CI95%] = 1.16–4.23; p = 0.021), 20% of those that reported having had more than one sexual partner during their lifetime (OR: 3.83 [CI95%] = 1.56–9.37; p = 0.003), and in 28.3% that use oral contraceptives (CI95% = 1.33–5.43; p = 0.008). The prevalence of sexual infection by C. trachomatis was 4.6% (14/303), and this bacterium was present in 16.1% of the young women of less than 25 years of age (OR: 2.86 [CI95%] = 1.33–5.43; p = 0.008). Conclusions We found a high prevalence of HPV in young, unmarried women who started their sex lives early, who had several sexual partners in their lives and who used oral contraceptives. The prevalence of C. trachomatis was high only in young women. Our data are in accordance with other studies in Brazil and in the world and may serve to base the formulation of diagnostic and screening measures for these infections in women in the Amazon.
Background Approximately 80% of infected women infected by Chlamydia trachomatis are asymptomatic, although this infection can lead to serious complications in the female reproductive tract. Few data on Chlamydiainfection and genotypes are available in Amazonian communities. Objectives To describe the prevalence of and associated factors and to identify the genotypes of sexual C. trachomatis infection in female university students in different urban centers (capital and interiors) in the Brazilian state of Pará, in the eastern Amazon region. Methods A cross-sectional study was performed among young women attending public universities in four different urban centers in the eastern Amazon region. They were invited to participate in the studt and cervical secretions were collected for molecular diagnosis of C. trachomatis. We utilized amplification of the ompA gene by nested PCR. Positive samples were genotyped by nucleotide sequencing. Study participants completed a questionnaire on social, epidemiological, and reproductive health variables. A Qui-square and Binominal regression test were used to evaluate the degree of association of these variables with the infection. Results A total of 686 female students was included in the study. The overall prevalence of C. trachomatis was 11.2% (77/686). The prevalence of this infection was higher in interiors (15.2% vs 9.5%/ p: 0.0443). Female university students who do not have a sexual partner (11.8%/p <0.008), who do not use a condom in their sexual relations (17.8%/p <0.0001) and who reported having suffered a miscarriage (32%/p <0.0001) have high chances of acquiring this sexual infection. The ompA gene was sequenced in only 33 (42.8%) samples, revealing the genotype J was the most frequent (27.2% [9/33]), followed by genotypes D (24.2% [8/33]), and then genotypes F (18.2% [6/33]), E (15.1% [5/33]) K (6.1% [2/33]), Ia (6.1% [2/33]), and G (3.1% [1/33]). Conclusions The high prevalence of sexual infection by C. trachomatis in the female university students from the interior of the state of Pará, individuals with no fixed sexual partner, those that had had a miscarriage, the students that do not use condoms in their sexual relations. The genotype J of C. trachomatis genotypes was the most frequent. These data are important to help defining the epidemiological effects of chlamydial infections in Amazonian populations.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.