Prevalence and predictive factors of Chlamydia trachomatis genital infection in inmates 25 to 65 years old in four Catalan prisons.

OBJECTIVES: Determine the prevalence of Chlamydia trachomatis (CT) infection, the risk factors for infection in inmates aged 25 to 65 years old in four Catalan prisons. MATERIALS AND METHODS: This is a cross sectional study conducted in four Catalan prisons chosen at convenience with a random stratified sample of the penitentiary population 25 to 65 years old taken within these centres. A urine specimen was analysed using the Anyplex CT/NG Seegene technique. An ad hoc questionnaire was used to determine sociodemographic and behavioural risk factors for infection within the previous year. The prevalence estimates of CT were calculated. Crude and adjusted odds ratios (ORs) and 95% Confidence Intervals (CIs) were used to estimate associations between infection and risk factor. RESULTS: Out of 1,469 participants, 15 men tested positive for CT (prevalence: 1.02%). We explored age, country of birth, education, occupation, sexual orientation, age initiation sexual activity, number and type of sexual partners (sporadic vs. stable) in a year, concurrency of sexual partners, preservative use in previous sexual relationship, etc. The only factor independently associated with infection was being heterosexual man having sexual relationships with different sporadic partners. Among those who had had an STI (Sexually Transmitted Infection) in life 27% did not notify to all their partners and the main reason was not being able to retrieve them. CONCLUSIONS: CT prevalence in inmates 25 to 65 years old is very low in four prisons of Catalonia. No systematic screening of infection is justified although prisoners having different sporadic sexual partners may need more sexual infection prevention advice.

Prevalencia y factores predictivos de infección por Chlamydia trachomatis genital en presos de 25 a 65 años en cuatro prisiones de Cataluña / Prevalence and predictive factors of Chlamydia trachomatis genital infection in inmates 25 to 65 years old in four Catalan prisons

Objetivos: Determinar la prevalencia de Chlamydia trachomatis (CT) en la población penitenciaria con edad comprendida entre los 25 y 65 años y los factores de riesgo en cuatro prisiones de Cataluña. Materiales y métodos: Estudio transversal realizado, en cuatro centros escogidos a conveniencia, con una muestra aleatoria estratificada de presos por grupo de edad y sexo dentro de cada uno de los centros. Se recogió una muestra de orina para determinar el ADN de CT mediante la técnica Anyplex CT/NG Seegene: se utilizó una encuesta ad hoc para recoger las variables sociodemográficas, de comportamiento y de factores de riesgo de infección en el año anterior. Para estimar la asociación entre infección y factor de riesgo, se calcularon: las razones de posibilidades u odds ratios (OR) crudas y ajustadas y los intervalos de confianza del 95% (IC). Resultados: La prevalencia de CT fue del 1,02%, afectando a 15 hombres heterosexuales entre 1.469 participantes. Se exploró la edad, el país de nacimiento, la educación, la ocupación, la orientación sexual, la edad de inicio de relaciones sexuales, el número y el tipo de parejas sexuales (esporádicas frente a estables) en el año anterior, la concurrencia de parejas, el uso del preservativo en la última relación sexual, etc. El único factor asociado independientemente a la infección por CT fue tener relaciones sexuales con parejas esporádicas dentro o fuera de la prisión. Entre los que manifestaron haber tenido una infección de transmisión sexual (ITS) en el curso de su vida, el 27% no lo notificaron a todas sus parejas, y la principal razón fue la imposibilidad de recuperar el contacto con ellas

Objective: Determine the prevalence of Chlamydia trachomatis (CT) infection, the risk factors for infection in inmates aged 25 to 65 years old in four Catalan prisons. Material and method: This is a cross sectional study conducted in four Catalan prisons chosen at convenience with a random stratified sample of the penitentiary population 25 to 65 years old taken within these centres. A urine specimen was analysed using the Anyplex CT/NG Seegene technique. An "ad hoc" questionnaire was used to determine sociodemographic and behavioural risk factors for infection within the previous year. The prevalence estimates of CT were calculated. Crude and adjusted Odds Ratios (ORs) and 95% (CIs) were used to estimate associations between infection and risk factors. Results: Out of 1469 participants 15 men tested positive for CT (prevalence: 1.02%). We explored age, country of birth, education, sexual orientation, age initiation sexual activity, number and type of sexual partners (sporadic vs. stable) in a year, concurrency of sexual partners, preservative use in previous sexual relationship, etc. The only factor independently associated with infection was being heterosexual man having sexual relationships with different sporadic partners. Among those who had had a sexually transmitted infection (STI) in life 27% did not notify to all their partners and the main reason was not being able to retrieve them. Conclusions: CT prevalence in inmates 25 to 65 years old is very low in four prisons of Catalonia. No systematic screening of infection is justified although prisoners having different sporadic sexual partners may need more sexual infection prevention advice