Prevalence of HIV/STIs and correlates with municipal characteristics among female sex workers in 13 Mexican cities / Prevalencia de VIH/ITS y correlaciones con carácterísticas municipales entre trabajadoras sexuales en 13 ciudades mexicanas

Abstract: Objective: To identify correlates of HIV/STI prevalence among 13 cities with varying sizes of female sex worker (FSW) populations and municipal characteristics in Mexico. Materials and methods: FSWs underwent interviews and testing for HIV, syphilis, gonorrhea and chlamydia. Logistic regression explored variations in HIV/STI prevalence. Results: Among FSWs (n=1 092), prevalence across 13 sites was: HIV: 0.4% (range: 0%-1.4%): syphilis: 7.8% (range: 0%-17.2%); chlamydia: 15.3% (range: 5.7%-32.2%); gonorrhea: 2.9% (range 0%-13.8%), and any HIV/STI: 23% (range: 9.9%-46%). Municipalities with high human development scores and a lower municipal marginalization index had higher odds of combined HIV/STI prevalence. After controlling for site-specific variability in municipal characteristics, greater risk of HIV/STIs was associated with lower education, having a spouse diagnosed or treated for an STI, unaffordability of condoms, and having non-Mexican clients. Conclusions: Prevalence of HIV/STIs varies across Mexican municipalities indicating the need for surveillance to identify hotspots for targeted resource allocation.

Resumen: Objetivo: Identificar correlaciones de la prevalencia de VIH / ITS entre 13 ciudades con diferentes tamaños de población de trabajadoras sexuales y características municipales en México. Material y métodos: Las trabajadoras sexuales fueron entrevistadas y recibieron pruebas de VIH, sífilis, gonorrea y clamidia. La regresión logística exploró las variaciones en la prevalencia del VIH/ITS. Resultados: Entre las trabajadoras sexuales (n = 1 092), la prevalencia en 13 sitios fue: VIH: 0.4% (rango: 0-1.4%): sífilis: 7.8% (rango: 0-17.2%); clamidia: 15.3% (rango: 5.7-32.2%); gonorrea: 2.9% (rango 0-13.8%) y cualquier VIH/ITS: 23% (rango: 9.9-46%). Los municipios con altos puntajes de desarrollo humano y menor índice de marginación municipal tuvieron una mayor probabilidad de prevalencia combinada de VIH/ITS. Después de controlar la variabilidad específica del sitio en las características municipales, el mayor riesgo de VIH / ITS se asoció con menor educación, tener un cónyuge diagnosticado o tratado para una ITS, imposibilidad de conseguir condones y tener clientes no mexicanos. Conclusiones: La prevalencia de VIH/ITS varía entre los municipios mexicanos, lo que indica la necesidad de una vigilancia para identificar hotspots para la asignación selectiva.

Prevalence of Chlamydia trachomatis and Neisseria gonorrhea and associated factors among women living with Human Immunodeficiency Virus in Brazil: a multicenter study

Abstract Background: Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) cause infections in the female genital tract, increasing susceptibility to and infectiousness of HIV. The objectives of the present study were to determine the prevalence and associated factors of CT and GC infection among HIV-infected women in Brazil. Methods: Cross-sectional study conducted from March to December 2015, including HIV-infected women attending referral centers in nine states of Brazil, aged 18-49 years, nonpregnant. An interview was conducted including socio-demographic, epidemiological and clinical characteristics. After the interview, gynecological examination was conducted to collect cervical cytology and vaginal secretion to C. trachomatis and N. gonorrhoeae tests through molecular biology. Results: A total of 802 (89.1%) women participated. The prevalence of CT was 2.1% (17/802) and CG was 0.9% (7/802). The prevalence of a positive test for both CT and/or GC was 2.7%. The factors associated with positive CT/GC test in the multivariate logistic regression analysis were abnormal Papanicolau smear (OR 4.1; 95% CI: 1.54-11.09) and the presence of abnormal cervical discharge (OR 2.6; 95% CI: 1.02-6.71). Among 377 women who reported previous STI 245 (65.0%) reported using condom more frequently after being diagnosed. 62 (16.4%) discovered the STI after the partner told he was infected; 157 (41.6%) had STI symptoms and looked for care, and 158 (41.9%) discovered it in a routine consultation for another reason. Conclusions: The control of STI represents a unique opportunity to improve reproductive health of women living with HIV. STI diagnosis can change their behavior and reduce the sexual transmission of HIV and bacterial STI.

Chlamydia trachomatis infection in young pregnant women in Southern Brazil: a cross-sectional study / Infecção por Chlamydia trachomatis em gestantes jovens no Sul do Brasil: um estudo transversal / Infección por Chlamydia trachomatis en gestantes jóvenes en el sur de Brasil: un estudio transversal

Abstract: This study estimated the prevalence of Chlamydia trachomatis infection during pregnancy in a sample of women up to 29 years of age in the city of Pelotas, Rio Grande do Sul State, Brazil, and investigated socio-demographic risk factors such as maternal age, marital status, maternal schooling, and family income. C. trachomatis infection was diagnosed with PCR using BD ProbeTecTM CT/GC Amplified DNA Assay. Socio-demographic, behavioral, and reproductive data were collected using structured questionnaires. All collections were performed by previously trained medical students. The study included a stratified probabilistic sample from four maternity hospitals in the city. The sample included 562 pregnant women, and prevalence of C. trachomatis infection was 12.3% (95%CI: 9.6-15.0). No significant association was identified between C. trachomatis infection and any of the target variables, including obstetric outcomes such as history of preterm delivery. Our findings in terms of low treatment adherence, only 43% of the women and 9.7% of partners, associated with high C. trachomatis prevalence, reinforce the need to implement routine screening for C. trachomatis during prenatal care. The attempt to diagnose and treat this infection after delivery, as in this study, limits the possibility of success.

Resumo: Este estudo estimou a prevalência de Chlamydia trachomatis durante a gestação entre mulheres de até 29 anos e investigou fatores de risco sociodemográficos, como idade materna, estado civil, escolaridade materna e renda familiar, para a infecção na cidade de Pelotas, Rio Grande do Sul, Brasil. Infecção por C. trachomatis foi diagnosticada por PCR utilizando BD ProbeTecTM CT/GC Amplified DNA Assay system. Dados sociodemográficos, comportamentais e reprodutivos foram coletados através de questionários estruturados. Todas as coletas foram realizadas por estudantes de medicina treinados. Amostra probabilística estratificada de quatro maternidades da cidade foi estudada. A amostra constou de 562 gestantes e a prevalência de infecção por C. trachomatis foi de 12,3% (IC95%: 9,6-15,0). Não foi identificada associação significativa entre infecção por C. trachomatis e as variáveis investigadas, incluindo desfechos obstétricos como parto pretermo. Nossos achados de baixa adesão ao tratamento, de apenas 43% entre as mulheres e de 9,7% entre os parceiros, associados a alta prevalência, reforçam a necessidade de implementar rastreamento de rotina para C. trachomatis durante a assistência pré-natal. A tentativa de diagnosticar e tratar esta infecção depois do parto, como feito neste estudo, limita a possibilidade de sucesso.

Resumen: Este estudio estimó la prevalencia de Chlamydia trachomatis durante la gestación, entre mujeres de hasta 29 años, e investigó factores de riesgo sociodemográficos como: edad materna, estado civil, escolaridad materna y renta familiar, para esta infección en la ciudad de Pelotas, Rio Grande do Sul, Brasil. La infección por C. trachomatis fue diagnosticada mediante PCR, utilizando BD ProbeTecTM CT/GC Amplified DNA Assay system. Los datos sociodemográficos, comportamentales y reproductivos se recogieron a través de cuestionarios estructurados. Todas las recogidas de datos se realizaron por parte de estudiantes de medicina entrenados. Se estudió la muestra probabilística estratificada de cuatro maternidades de la ciudad. La muestra constó de 562 gestantes y la prevalencia de infección por C. trachomatis fue de un 12,3% (IC95%: 9,6-15,0). No se identificó una asociación significativa entre infección por C. trachomatis y las variables investigadas, incluyendo desenlaces obstétricos como el parto pretérmino. Nuestros hallazgos de baja adhesión al tratamiento, solamente un 43% entre las mujeres y un 9,7% entre los compañeros, asociados a la alta prevalencia, refuerzan la necesidad de implementar una exploración de rutina para C. trachomatis durante la asistencia prenatal. La tentativa de diagnosticar y tratar esta infección después del parto, como se realizó en este estudio, limita la posibilidad de éxito.

Anogenital infection by Chlamydia trachomatis and Neisseria gonorrhoeae in HIV-infected men and women in Salvador, Brazil

ABSTRACT Background: Infections caused by Chlamydia trachomatis and Neisseria gonorrhoeae are the most common bacterial sexually transmitted infections throughout the world. These sexually transmitted infections are a growing problem in people living with HIV/AIDS. However, the presence of these agents in extra genital sites, remains poorly studied in our country. The objective of this study was to estimate the prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae anal and genital infection in people living with HIV/AIDS followed in a reference center in Salvador, Brazil. Methods: Cross-sectional study, from June 2013 to June 2015. Proven HIV-infected people attending this reference center were invited. Clinical and epidemiological data were obtained through interview with standardized form. Chlamydia trachomatis and Neisseria gonorrhoeae screening was performed using qPCR (COBAS 4800® Roche). Results: The frequency of positive cases of Chlamydia trachomatis and Neisseria gonorrhoeae was 12.3% in total, 9.2% cases amongst women and 17.1% amongst men. We found 14.0% of positive cases in anus and 3.1% in genital region in men, while 5.6% and 3.6%, in women, respectively. Among men, anal infection was associated with age <29 years (p = 0.033), report of anal intercourse (p = 0.029), pain during anal intercourse (p = 0.028). On the other hand, no association between genital infection and other variables were detected in bivariate analysis. Among women, we detected an association between Chlamydia trachomatis genital infection and age <29 years (p < 0.001), younger age at first sexual intercourse (p = 0.048), pregnancy (p < 0.001), viral load >50 copies/mL (p = 0.020), and no antiretroviral use (p = 0.008). Anal infection in women was associated with age <29 years old (p < 0.001) and pregnancy (p = 0.023), and was not associated with report of anal intercourse (p = 0.485). Conclusion: Missed opportunities for diagnosis in extra genital sites could impact on HIV transmission. The extra genital sites need to be considered to break the HIV and bacterial sexually transmitted infections chain-of-transmission.

Prevalence and factors associated with Chlamydia trachomatis infection among women with HIV in São Paulo

Abstract: INTRODUCTION: This study aimed to estimate the prevalence and risk factors associated with Chlamydia trachomatis (CT) infection among women with HIV in São Paulo. METHODS: This cross-sectional study included women with HIV who were receiving care from sixteen public health services in São Paulo (October 2013 to March 2014). All participants answered a questionnaire regarding their sociodemographic, behavioral, and clinical characteristics. A urine sample was tested for CT and Neisseria gonorrhoeae (NG) using the polymerase chain reaction. The chi-square test and a logistic regression model were used to test the associations with CT or NG infections. RESULTS: We evaluated 853 women and ultimately included 836 (98%) women. The mean age was 40.5 ± 0.34 years, and the prevalences of CT and NG infections were 1.8% and 0.5%, respectively. CT infection was associated with CD4+ T-cell counts of <350 cells/mm3 [adjusted odds ratio (ORadj): 24.5], age of 18-25 years (ORadj: 23.2), the non-use of condoms during the last 6 months (ORadj: 10.2), a self-reported history of a sexually transmitted infection (ORadj: 9.4), and having two or more sexual partners during the last year (ORadj: 6.1). CONCLUSIONS: Although we observed a low prevalence of CT infection among women with HIV, younger age was associated with a high risk of infection. Therefore, it may be appropriate to include screening for CT as part of the routine care for this population.

Caracterización de trabajadores sexuales del área norte de Santiago portadoras de Chlamydia trachomatis / Characterization of sex workers in the northern area of Santiago with Chlamydia trachomatis

Marco Teórico: chlamydia trachomatis, agente bacteriano de infección de transmisión sexual (ITS) más frecuente en el mundo, se asocia a patología inflamatoria y neonatal, y a infertilidad. Las trabajadoras sexuales constituyen un grupo de alto riesgo para su contagio. Objetivo: Caracterizar trabajadoras sexuales portadoras de C. trachomatis del área norte de Santiago. Pacientes y Métodos: 36 trabajadoras sexuales con inmunofluorescencia directa positiva para C. trachomatis controladas en una Unidad de ITS. Se analizó en sus fichas clínicas: nivel educacional, uso de alcohol y drogas, tendencia sexual, ITS asociadas y uso de preservativo. Esta información se comparó con fichas clínicas de trabajadoras sexuales no portadoras. Resultados: No se encontraron diferencias estadísticamente significativas entre portadoras y no portadoras, a partir de la revisión de registros clínicos. Conclusión: El diagnóstico de infección de C. trachomatis y su adecuado control requieren de procedimientos estandarizados para su implementación en grupos de alto riesgo.

Background: chlamydia trachomatis, the most frequent bacterial agent of sexually transmited infections (STI) in the world, is associated with inflammatory and neonatal diseases, as well as with infertility. Sex workers are a high risk group. Objetive: To characterize sex workers in the northern area of Santiago, who are C. trachomatis carriers. Patients and Methods: 36 sex workers, whose direct immunofluorescence assays tested positive for C. trachomatis, attending a STI Unit. The following information was analyzed from their clinical records: educational level, alcohol and drugs use, sexual tendency, associated STIs and condom use. It was compared to the information from clinical records of non C. trachomatis carrier sex workers. Results: No statistically significant difference between carriers and noncarriers was found, regarding the aforementioned features, from the clinical records review. Conclusion: The diagnosis of C. trachomatis infection and its proper control require standardized proceedings to be implemented in high risk groups.

Chlamydia trachomatis in human immunodeficiency virus-infected men treated at a referral hospital for sexually transmitted diseases in the Amazonas, Brazil

OBJECTIVES: The aim of the present study was to determine the Chlamydia trachomatis prevalence and to identify the demographic, behavioural and clinical factors associated with C. trachomatis in human immunodeficiency virus infected men. STUDY: This was a cross-sectional study of C. trachomatis prevalence among human immunodeficiency virus-infected men enrolled at the Outpatient clinic of acquired immunodeficiency syndrome of the Fundação de Medicina Tropical Dr. Heitor Vieira Dourado in Manaus, Amazonas, Brazil. C. trachomatis deoxyribonucleic acid from urethral samples was purified and submitted to real time polymerase chain reaction to identify the presence of C. trachomatis. RESULTS: A total of 276 human immunodeficiency virus-infected men were included in the study. The prevalence of C. trachomatis infection was 12% (95% confidence interval 8.1%-15.7%). The mean age of the participants was 34.63 (standard deviation 10.80) years. Of the 276 human immunodeficiency virus-infected men, 93 (56.2%) had more than one sexual partner in the past year and 105 (38.0%) reported having their first sexual intercourse under the age of 15 years. Men having sex with men and bisexuals amounted to 61.2% of the studied population. A total of 71.7% had received human immunodeficiency virus diagnosis in the last three years and 55.1% were using antiretroviral therapy. Factors associated with C. trachomatis infection in the logistic model were being single (p<0.034), men having sex with men (p<0.021), and having previous sexually transmitted diseases (p<0.001). CONCLUSION: The high prevalence of C. trachomatis infection among human immunodeficiency virus-infected men highlights that screening human immunodeficiency virus-infected men for C. trachomatis, especially among men having sex with men, is paramount to control the spread of C. trachomatis infection. .

High HIV prevalence among men who have sex with men in Jamaica is associated with social vulnerability and other sexually transmitted infections / La alta prevalencia del VIH entre hombres que tienen relaciones sexuales con hombres en Jamaica se halla asociada con vulnerabilidad social e infecciones de transmisión sexual

BACKGROUND: Human immunodeficiency virus (HIV) prevalence among men who have sex with men (MSM) is thought to be high in Jamaica. The objective of this study was to estimate HIV prevalence and identify risk factors in order to improve prevention approaches. METHODS: With the help of influential MSM, an experienced research nurse approached MSM in four parishes to participate in a cross-sectional survey in 2007. Men who have sex with men were interviewed and blood taken for HIV and syphilis tests, and urine taken for gonorrhoea, chlamydia and trichomonas testing using transcription-mediated amplification assays. A structured questionnaire was administered by the nurse. RESULTS: One third (65 of 201; 32%, 95% Confidence Interval (CI) 25.2, 47.9) of MSM were HIV positive. Prevalence of other sexually transmitted infections (STI) was: chlamydia 11%, syphilis 6%, gonorrhoea 3.5% and trichomonas 0%. One third (34%) of MSM identified themselves as being homosexual, 64% as bisexual and 1.5% as heterosexual. HIV positive MSM were significantly more likely to have ever been told by a doctor that they had an STI (48% vs 27%, OR 2.48 CI 1.21, 5.04, p = 0.01) and to be the receptive sexual partner at last sex (41% vs 23%, OR 2.41 CI 1.21, 4.71, p = 0.008). Men who have sex with men who were of low socio-economic status, ever homeless and victims of physical violence were twice as likely to be HIV positive. The majority (60%) of HIV positive MSM had not disclosed their status to their partner and over 50% were not comfortable disclosing their status to anyone. CONCLUSIONS: The high HIV prevalence among MSM is an important factor driving the HIV epidemic in Jamaica. More effective ways need to be found to reduce the high prevalence of HIV among MSM including measures to reduce their social vulnerability, combat stigma and discrimination and empower them to practice safe sex.

ANTECEDENTES: Se piensa que la prevalencia del virus de inmunodeficiencia humana (VIH) entre hombres que tienen sexo con hombres (HSH) es alta en Jamaica. El objetivo de este estudio fue estimar la prevalencia del VIH e identificar los factores de riesgo a fin de mejorar las estrategias de prevención. MÉTODOS: Con la ayuda de HSH influyentes, una enfermera investigadora experimentada abordó a HSH en cuatro distritos, recabando su participación en una encuesta transversal en 2007. Se entrevistó a hombres que tienen sexo con hombres, y se tomaron muestras de sangre para realizar pruebas de VIH. Asimismo se tomaron muestras de orina para hacer pruebas de gonorrea, clamidia y trichomonas, usando ensayos de amplificación mediada por transcripción. Un cuestionario estructurado fue aplicado por la enfermera. RESULTADOS: Un tercio (65 de 201; 32%, 95% intervalo de confianza (IC) 25.2, 47.9) de los HSH fueron VIH positivos. La prevalencia de otras infecciones de transmisión sexual (ITS) fue como sigue: clamidia 11%, sífilis 6%, gonorrea 3.5%, y trichomonas 0%. Un tercio (34%) de los HSH se identificaron como homosexuales, 64% como bisexuales, y un 1.5% como heterosexuales. Los HSH que resultaron VIH positivos presentaron una probabilidad significativamente mayor de haber recibido un diagnóstico de ITS por parte de un médico (48% vs 27%, OR 2.48 IC 1.21, 5.04, p = 0,01), y de haber sido la pareja sexual receptora en el último intercambio sexual (41% frente a 23%, OR 2.41 IC 1.21, 4.71, p = 0.008). Los hombres que tuvieron sexo con hombres tenían un bajo nivel socio-económico, y alguna vez estuvieron sin hogar, fueron víctimas de violencia física, y tenían una probabilidad dos veces más alta de ser VIH positivos. La mayoría (60%) de los MSM VIH positivos no habían revelado su condición a sus parejas, y más del 50% no se sentían cómodos revelando su estatus a otras personas. CONCLUSIONES: La alta prevalencia de VIH entre HSH es un factor importante en el desarrollo de la epidemia de VIH en Jamaica. Se necesita hallar formas más eficaces de reducir la alta prevalencia de VIH entre los HSH, incluidas las medidas para reducir su vulnerabilidad social, combatir el estigma y la discriminación, y capacitarles para practicar sexo seguro.

Prevalence of Neisseria gonorrhoeae and Chlamydia trachomatis infection in men attending STD clinics in Brazil / Prevalência de Neisseria gonorrhoeae e infecção pela Chlamydia trachomatis em homens atendidos em clínicas de DST no Brasil

INTRODUCTION: The study aimed to assess the prevalence of Neisseria gonorrhoeae and Chlamydia trachomatis infections and identify demographic, behavioral and clinical factors correlated withsuch infections in men attending six sexually transmitted disease clinics in Brazil. METHODS: Multicentric, cross-sectional study performed among men attending STD clinics in Brazil. The study included STD clinics in six cities distributed throughout the five geographic regions of Brazil in 2005. Patients provided 20 ml of first catch urine for testing for NG and CT by DNA-PCR. RESULTS: A total of 767 (92.9 percent) men were included in the study. The mean age was 26.5 (SD 8.3) years-old. Prevalence of Chlamydia infection was 13.1 percent (95 percentCI 10.7 percent-15.5 percent) and gonorrhea was 18.4 percent (95 percentCI 15.7 percent-21.1 percent). Coinfection prevalence was 4.4 percent (95 percentCI 2.95 percent-5.85 percent) in men who sought attendance in STI clinics. Factors identified as associated with C. trachomatis were younger age (15-24) [OR=1.4 (95 percentCI 1.01-1.91)], present urethral discharge [OR=4.8 (95 percentCI 1.52-15.05)], genital warts [OR=3.0 (95 percentCI 1.49-5.92)] and previous history of urethral discharge [OR=2.4 (95 percentCI 1.11-5.18)]. Variables associated with gonorrhea were younger age (15 to 24) [OR=1.5 (95 percentCI 1.09-2.05)], presence of urethral discharge [OR=9.9 (95 percentCI 5.53-17.79)], genital warts [OR=18.3 (95 percentCI 8.03-41.60)] and ulcer present upon clinical examination [OR=4.9 (95 percentCI 1.06-22.73)]. CONCLUSIONS: These findings have important implications for education and prevention actions directed toward men at risk of HIV/STD. A venue-based approach to offer routine screening for young men in STD clinics should be stimulated.

INTRODUÇÃO: Nosso objetivo foi acessar a prevalência de Neisseria gonorrhoeae e Chlamydia trachomatis e identificar fatores demográficos, comportamentais e clínicos correlacionados a essas infecções em homens atendidos em clínicas de doenças sexualmente transmissíveis no Brasil. MÉTODOS: Estudo multicêntrico, transversal conduzido em homens que procuraram atendimento em clínicas de DST. O estudo incluiu clínicas de DST em seis cidades distribuídas nas cinco regiões geográficas do Brasil em 2005. Pacientes coletaram 20ml do primeiro jato de urina para testar NG e CT por DNA-PCR. RESULTADOS: Um total de 767 (92,9 por cento) homens foi incluído no estudo. A média de idade foi 26,5 (DP 8,3) anos. A prevalência de infecção por CT foi 13,1 por cento (IC95 por cento 10,7 por cento-15,5 por cento) e NG de 18,4 por cento (IC95 por cento 15,7 por cento-21,1 por cento). A prevalência de co-infecção foi 4,4 por cento (IC95 por cento 2,95 por cento-5,85 por cento). Os fatores identificados como sendo associados com a infecção pela CT foram ser jovem (15-24) [OR=1,4 (IC95 por cento 1,01-1,91)], apresentar corrimento uretral ao exame [OR=4.8 (IC95 por cento 1,52-15,05)], verrugas genitais [OR=3,0 (IC95 por cento 1,49-5,92)] e história prévia de corrimento uretral [OR=2,4 (IC95 por cento 1,11-5,18)]. As variáveis associadas com a gonorréia foram ser jovem (15 to 24) [OR=1,5 (IC95 por cento 1,09-2,05)], apresentar corrimento uretral [OR=9,9 (IC95 por cento 5,53-17,79)], verrugas genitais [OR=18,3 (IC95 por cento 8,03-41,60)] e úlcera ao exame clínico [OR=4,9 (IC95 por cento 1,06-22,73)]. CONCLUSÕES: Estes resultados têm implicações importantes para medidas de educação e prevenção direcionadas aos homens com risco acrescido de HIV/DST. A abordagem no serviço para oferecer testes de rotina para homens jovens atendidos em clínica de DST deve ser estimulada.

Prevalencia de Chlamydia trachomatis y Neisseria gonorrhoeae en adolescentes chilenas / Rates of Chlamydia trachomatis and Neisseria gonorrhoeae in Chilean adolescents

Background: Chlamydia trachomatis and Neisseria gonorrhoeae are common sexually transmitted diseases among young women and little has been doing to study them in Chilean adolescents. Aim: Determine the rates of C trachomatis and N gonorrhoeae in Chilean young women. Material and methods: Urine samples were obtained from 203 sexually active females under 25 year-old, who attended hospitals from either high or low-income areas in Chile's capital, Santiago. C trachomatis and Ngonorrhoeae were detected by nucleic acid amplification testing. Results: Seven percent of samples were positive for C trachomatis. AU samples were negative for N gonorrhoeae. Among pregnant women, 19 percent of samples were positive for C trachomatis, while non-pregnant women were positive on 5.5 percent (p =0.04). Systematic use of barrier contraception was referring by 12 percent of women. AU of the latter was free of C trachomatis. No association was observing between age, number of sexual partners, age of first sexual intercourse, and presence of uro-gynecological symptoms, socioeconomic status and the rate of C trachomatis. Conclusions: Seven percent of this group of Chilean young women was infected with C trachomatis. The figure rises to 19 percent if pregnant. Surveillance and screening programs should been implemented to prevent sequels on this vulnerable population.

Infecção por Chlamydia em pacientes com e sem lesões intra-epiteliais cervicais / Chlamydia infection in patients with and without cervical intra-epithelial lesions

OBJETIVOS: Determinar a freqüência de infecção por Chlamydia trachomatis em pacientes com e sem lesões intra-epiteliais cervicais atendidas em ambulatório especializado no Recife (2007), e sua associação com variáveis biológicas, demográficas, hábitos, características reprodutivas e clínico-ginecológicas. MÉTODOS: Realizou-se um estudo do tipo corte transversal, incluindo 70 mulheres (35 com alterações citológicas e 35 normais). Realizaram-se colposcopia, biópsia quando necessário e pesquisa para Chlamydia trachomatis por Imunofluorescência Direta. As variáveis analisadas foram idade, raça, procedência, escolaridade, estado civil, menarca, idade da primeira relação sexual, paridade, número de parceiros, corrimento, realização de citologia prévia, episódios de DST, eletrocauterização, método contraceptivo, antecedente familiar de câncer uterino, consumo alcoólico, tabagismo, drogas ilícitas e imunossupressoras, resultado da citologia e infecção cervical por Chlamydia trachomatis. Para determinação da força da associação, calculou-se a Razão de Prevalência (RP) e o intervalo de confiança 95 por cento, realizando-se análise multivariada para controle das variáveis potencialmente confundidoras. RESULTADOS: A freqüência de infecção por Chlamydia trachomatis foi significativamente maior em pacientes com alterações citológicas (80 por cento vs. 14,3 por cento), com uma RP de 5,60 (IC 95 por cento = 2,44 - 12,82). Analisando os fatores associados à infecção por Chlamydia , a única variável que persistiu significativamente associada após análise multivariada foi a história pregressa de DST (OR=63,47; IC 95 por cento = 13,93 - 289,09). CONCLUSÃO: A presença da Chlamydia trachomatis está associada às alterações citológicas da cérvice uterina, e a história pregressa de DST deve ser valorizada no tratamento e seguimento clínico destas pacientes.

OBJECTIVES: To determine the frequency of Chlamydia trachomatis infection in patients with and without intraepithelial cervical lesions attended at specialized ambulatory in Recife (2007) and its association with biologic and demographic variables, habits, reproductive, clinical and gynecologic characteristics. METHODS: A cross-sectional study was conducted including 70 women (35 with cytological cervical lesions and 35 with normal smears). Colposcopy and biopsy when necessary were performed and Chlamydia infection was determined by direct immunofluorescence. Analysis variables were age, race, precedence, schooling, marital status, menarche, age at first sexual intercourse, parity, number of sexual partners, vaginal discharge, previous Pap smear, STD episodes, cervical cauterization, contraceptive methods, familial antecedents of cervical cancer, alcohol intake, use of illicit and immunosuppressive drugs, Papanicolaou result and cervical Chlamydia l infection. To determine the strength of association prevalence ratio (PR) and its 95 percent confidence interval were calculated. Multivariate analysis was performed for controlling potentially confounding variables. RESULTS: the frequency of Chlamydia l infection was significantly greater in patients with intraepithelial cervical lesions (80.0 percent vs. 14.3 percent; PR = 5.60; 95 percent CI = 2,44 - 12,82). When the factors associated with Chlamydia l infection were analyzed, the only variable that remained significantly associated after multivariate analysis was previous episode of STD (OR=63,47; 95 percent CI = 13,93 - 289,09). CONCLUSION: Chlamydia trachomatis infection is associated with intraepithelial cervical lesions and history of STD should be considered for treatment and follow-up of these patients.

The prevalence of genital chlamydial infection in the Jamaican population

Genital chlamydial infection has evolved as the leading sexually transmitted disease, both in the developed and the developing countries. The impact of genital chlamydial infection as a public health problem in the Caribbean is probably as high as in industrialized countries. Accurate statistics are therefore needed to obtain knowledge of the epidemiology of this disease. A prevalence study was carried out in Jamaica on persons attending different health facilities and locations. This was to ascertain the prevalence of chlamydial antibodies and of chlamydial infection in these selected populations. Microbiological methodologies employed were the microimmunofluorescent technique (MIF) for detecting antichlamydial antibodies, the direct immunofluorescent test (DFA) for detecting chlamydia antigens in specimens, and also isolation of C. trachomatis by culture in McCoy cells. A total of 1228 sera were tested for antichlamydial antibody resulting in the following seroprevalence rates. Prostitutes -95.3 percent, gynaecology patients -60.0 percent, family planning clinic attendess -59.8 percent, blood donors -52.6 percent, sexually transmitted diseases (STD) clinic patients -70.1 percent, pregnant women -25.0 percent. The 95.3 percent seroprevalence rate observed in prostitutes was significantly higher than that found in the other groups. From 1641 patients, specimens including urethral, endocervical, conjunctival and nasal swabs were cultured for C. trachomatis. The organism was isolated from 18.5 percent to 59.3 percent in this study group; in pregnant women 18.5 percent (n=200), neonates 24.0 percent (n=100), prostitues 24.8 percent (n=129), student 33.9 percent (n=103), family planning clinic attendess 34.0 percent (n=238), gynaecology patients 45.8 percent (n=170) and STD patients 59.3 percent (n=701). The seroprevalence of C. trachomatis is high in Jamaican population, although the rate of infection was found to be much lower. A wide cross-section of the Jamaican population in different age groups from different strata of the society and having different behavioural patterns was found to be infected with C. trachomatis. The prevalence of C. trachomatis infection was not influenced significantly by demographic factors or socioeconomic status, since both chlamydial antibody and C. trachomatis were demonstrated in all age groups and in individuals from different strata of the society with different behavioral patterns.