Coreactant-Free Zirconium Metal-Organic Framework with Dual Emission for Ratiometric Electrochemiluminescence Detection of HIV DNA.

Owing to the limitations of dual-signal luminescent materials and coreactants, constructing a ratiometric electrochemiluminescence (ECL) biosensor based on a single luminophore is a huge challenge. This work developed an excellent zirconium metal-organic framework (MOF) Zr-TBAPY as a single ECL luminophore, which simultaneously exhibited cathodic and anodic ECL without any additional coreactants. First, Zr-TBAPY was successfully prepared by a solvothermal method with 1,3,6,8-tetra(4-carboxyphenyl)pyrene (TBAPY) as the organic ligand and Zr4+ cluster as the metal node. The exploration of ECL mechanisms confirmed that the cathodic ECL of Zr-TBAPY originated from the pathway of reactive oxygen species (ROS) as the cathodic coreactant, which is generated by dissolved oxygen (O2), while the anodic ECL stemmed from the pathway of generated Zr-TBAPY radical itself as the anodic coreactant. Besides, N,N-diethylethylenediamine (DEDA) was developed as a regulator to ECL signals, which quenched the cathodic ECL and enhanced the anodic ECL, and the specific mechanisms of its dual action were also investigated. DEDA can act as the anodic coreactant while consuming the cathodic coreactant ROS. Therefore, the coreactant-free ratiometric ECL biosensor was skillfully constructed by combining the regulatory role of DEDA with the signal amplification reaction of catalytic hairpin assembly (CHA). The ECL biosensor realized the ultrasensitive ratio detection of HIV DNA. The linear range was 1 fM to 100 pM, and the limit of detection (LOD) was as low as 550 aM. The outstanding characteristic of Zr-TBAPY provided new thoughts for the development of ECL materials and developed a new way of fabricating the coreactant-free and single-luminophore ratiometric ECL platform.

Prevalence of HIV in slums area: a systematic review and meta-analysis.

BACKGROUND: Human Immunodeficiency Virus (HIV) remains a significant global health burden, particularly affecting vulnerable populations residing in slum areas which is characterized by overcrowding, poverty, and limited access to healthcare services, create an environment conducive to the transmission and spread of HIV. Despite the recognition of this issue, there is a lack of comprehensive understanding regarding the prevalence of HIV in slums. The aim of this study was to systematically synthesize the existing global evidence on HIV prevalence in slum populations. METHODS: A rigorous systematic literature review was conducted by searching multiple electronic databases, including Medline via PubMed, Scopus, Embase, Web of Sciences, and Directory of Open Access Journals (DOAJ), covering the period from January 1, 1990, to March 31, 2023. The quality and risk of bias for each included study were assessed using the Newcastle-Ottawa Scale. The pooled prevalence with its corresponding 95% confidence interval (CI) was calculated using a random-effects model with the Freeman-Tukey double arcsine transformation. The degree of heterogeneity among the studies was evaluated using the I2 test. Publication bias was also assessed using Egger's test. Additionally, subgroup analysis was performed to explore potential factors contributing to the observed heterogeneity. RESULTS: A systematic examination of the relevant literature resulted in the inclusion of a total of 22 studies for the purpose of this meta-analysis. These studies collectively assessed a sizable cohort consisting of 52,802 participants. Utilizing a random-effects model, an estimation of the overall prevalence of HIV in the slum area was determined to be 10% (95% CI: 7-13%). Further delineation through subgroup analysis based on the gender revealed a higher prevalence of HIV among women, standing at 13% (95% CI: 8-19%, 18 studies: I2 = 98%), as opposed to men, where the prevalence was found to be 8% (95% CI: 6-12%, 16 studies: I2 = 95%). A geographical breakdown of the included studies revealed that Africa exhibited the highest prevalence, with a figure of 11% (95% CI: 9-13%, 18 studies: I2 = 98%). Subsequently, studies conducted in the American continent reported a prevalence of 9% (95% CI: 7-11%, 2 studies: I2 = 57%). The Asian continent, on the other hand, displayed the lowest prevalence of 1% (95% CI: 0-3%, 2 studies: I2 = 94%). Notably, studies employing rapid tests indicated a prevalence of 13% (95% CI: 9-17%, 6 studies: I2 = 94%), while those relying on self-reported data reported a lower prevalence of 8% (95% CI: 5-11%, 6 studies: I2 = 99%). Moreover, studies utilizing ELISA reported a prevalence of 9% (95% CI: 6-12%, 10 studies: I2 = 96%). Finally, it was determined that studies conducted in upper-middle-income countries reported a higher prevalence of 20% (95% CI: 16-24%, 5 studies: I2 = 45%), whereas studies conducted in lower- and middle-income countries reported a prevalence of 8% (95% CI: 6-10%, 12 studies: I2 = 98%). CONCLUSION: The current study elucidates the troublingly high prevalence of HIV infection within slums area. Also, this finding underscores the urgent necessity for targeted and tailored interventions specifically aimed at curtailing the spread of HIV within slums. Policymakers must take cognizance of these results and devote their efforts towards the implementation of effective strategies to mitigate gender disparities, address poverty alleviation, and empower the inhabitants of these marginalized areas.

Seroprevalence of human immunodeficiency virus in African blood donors: a systematic review and meta-analysis.

BACKGROUND: In developing countries, the safety of blood transfusions remains an important public health concern as it is associated with a higher risk of transfusion-transmissible infections (TTIs). In this study, we aimed to estimate the seroprevalence of HIV among blood donors in Africa and assess the temporal trends and regional differences within the continent through a systematic review and meta-analysis. METHODS: Seven electronic databases (PubMed, Web of Science, Cochrane, Scopus, HINARI, Global Index Medicus and Clinical. TRIAL: gov) were searched for relevant studies for our research. We included all primary studies that estimated the seroprevalence of HIV among blood donors in Africa with an age population from 16 to 65 years old, without language restrictions, from inception up to March 1st 2024. The pooled seroprevalence was estimated through the DerSimonian-Laird random effects model. The temporal trends and regional differences were assessed through subgroup and meta-regression analysis. FINDINGS: We obtained 122 studies that met our inclusion criteria, comprising 7,814,996 blood donors tested for HIV. Sixty-six percent of the studies were from Western and Eastern Africa. The pooled seroprevalence of HIV among blood donors in Africa was 2.66% (95% CI: 2.17-3.20%; I2 = 99.80%, p < 0.01). The highest prevalence was observed in the Central African region, 3.28% (95% CI: 2.57%-4.06%), followed by the Eastern 3.21% (95% CI: 2.12%-4.52%), and the Western 2.66% (95% CI: 1.93%-3.49%) regions. Lower prevalences were observed in the Northern region, 0.57% (95% CI: 0.0%-2.10%), followed by the Southern African region with 0.45% (95% CI: 0.16%-0.86%). We observed a temporal decreased trend of HIV prevalence. INTERPRETATION: The prevalence of HIV infection among African blood donors remains high and is not homogeneous across the continent. Efficient measures to strengthen HIV testing and prevent HIV transmission through blood transfusion are needed in Africa. Systematic review protocol registration: PROSPERO CRD42023395616. FUNDING: This article was supported by National Funds through FCT - Fundação para a Ciência e a Tecnologia,I.P., within CINTESIS, R&D Unit (reference UIDP/4255/2020).

Palm-Sized Lab-In-A-Magnetofluidic Tube Platform for Rapid and Sensitive Virus Detection.

Simple, sensitive, and accurate molecular diagnostics are critical for preventing rapid spread of infection and initiating early treatment of diseases. However, current molecular detection methods typically rely on extensive nucleic acid sample preparation and expensive instrumentation. Here, a simple, fully integrated, lab-in-a-magnetofluidic tube (LIAMT) platform is presented for "sample-to-result" molecular detection of virus. By leveraging magnetofluidic transport of micro/nano magnetic beads, the LIAMT device integrates viral lysis, nucleic acid extraction, isothermal amplification, and CRISPR detection within a single engineered microcentrifuge tube. To enable point-of-care molecular diagnostics, a palm-sized processor is developed for magnetofluidic separation, nucleic acid amplification, and visual fluorescence detection. The LIAMT platform is applied to detect SARS-CoV-2 and HIV viruses, achieving a detection sensitivity of 73.4 and 63.9 copies µL-1, respectively. Its clinical utility is further demonstrated by detecting SARS-CoV-2 and HIV in clinical samples. This simple, affordable, and portable LIAMT platform holds promise for rapid and sensitive molecular diagnostics of infectious diseases at the point-of-care.

Diagnóstico diferencial de la neumonía en los tiempos del COVID-19 / Differential diagnosis of pneumonia at the time of COVID-19

No disponible

Development and validation of a simple and rapid way to generate low volume of plasma to be used in point-of-care HIV virus load technologies

ABSTRACT A new point-of-care HIV viral load, mPIMA HIV-1/2 VL, Abbott, USA, has been recently developed. This point-of-care viral load requires no skilled person to run and uses a small plasma volume (50 µL). However, obtaining 50 µL of plasma can be a challenge in limited resource settings. We validated a simple and easy method to obtain enough amount of plasma to run a point-of-care viral load. The study utilized 149 specimens from patients failing antiretroviral therapy. At least 250 µL of whole blood was collected in a microtube/EDTA from fingerstick (fs-plasma) and immediately centrifuged. Parallel collection of venous blood to obtain plasma (vp-plasma) was used to compare performance in a point-of-care viral load assay and in methodology used in centralized laboratories Abbott M2000, Abbott, USA. The procedure for plasma collection takes less than 10 min and in 94% of the cases only one fingerstick was sufficient to collect at least 250 µL of blood. The Pearson correlation coefficient value for vp-plasma versus fs-plasma ran on mPIMA was 0.990. The Bland-Altman mean difference (md) for this comparison were virtually zero (md = −0.001) with limits of agreement between −0.225 and 0.223. In addition, the Pearson correlation coefficient value for fs-plasma in mPIMA versus vp-plasma in Abbott M2000 was 0.948 for values above the mPIMA limit of quantification (LoQ; from 800 to 1,000,000 copies/mL). These results validate this simple plasma isolation method capable to be implemented in low resource countries where point-of-care decentralization is deeply needed.

VIH y SARS-CoV-2: aspectos a considerar para enfrentar esta nueva pandemia / HIV and SARS-CoV-2: points to consider to face this new pandemic

En diciembre de 2019 una nueva especie de ß-coronavirus causante de neumonía fue identificada en la ciudad China de Wuhan, el cual posteriormente fue denominado SARS-CoV-2. Este virus de ácido ribonucleico presenta ciertas similitudes con otros virus del mismo material genético, dentro de ellos se ha visto que la infección por virus de la inmunodeficiencia humana se asemeja en diversos aspectos a la infección por SARS-CoV-2. En este comentario presentamos algunas de las similitudes virológicas, inmunológicas, clínicas y farmacológicas entre estos dos virus, las cuales podrían permitirnos entender de mejor manera la inmunopatogenia de COVID-19, así como también tomar algunas decisiones en cuanto al manejo antiviral.

In December 2019, a new species of pneumonia-causing betacoronavirus was identified in Wuhan, China, which was later identified as SARS-CoV-2. This RNA virus presents certain similarities with other viruses of the same genetic material. It has been seen that infection by human immunodeficiency virus resembles the infection by SARS-CoV-2 in various aspects. In this comment, we present some of the virological, immunological, clinical, and pharmacological similarities between HIV and SARS-CoV-2, which could allow us to understand the immunopathogenesis of COVID-19 better, as well as make some decisions in regarding antiviral management.

Avaliação da correlação de sorologia e teste de ácido nucleico em doadores de sangue reagentes para o Vírus da Imunodeficiência Humana / Evaluation of the correlation of serology and nucleic acid testing in Anti-HIV reagent blood donors

Introdução: As transfusões sanguíneas começaram a ser realizadas no Brasil no século XX como forma de tratamento terapêutico. Com a descoberta do vírus HIV, a segurança do sangue doado passou a ser prioritária. Assim, candidatos à doação de sangue são submetidos a uma triagem clínica e sorológica, além do teste de ácido nucleico (NAT), obrigatório desde 2014 nos bancos de sangue. Métodos: Estudo retrospectivo através da análise de dados dos doadores de sangue de um Serviço de Hemoterapia em Porto Alegre/RS, nos anos de 2015 a 2017. Avaliando resultados sorológicos e da técnica NAT para HIV. Resultados: Das 28.625 amostras de usuários do serviço de hemoterapia, 41 (0,14%) foram reagentes para o HIV e 21 (0,07%) foram reagente para o teste NAT. Estes dados demonstram uma reatividade duas vezes maior nas amostras de bolsas testadas sorologicamente quando comparadas com a metodologia utilizada no NAT. Conclusão: O avanço científico e tecnológico tem auxiliado no que se refere a redução dos riscos de transmissão de doenças infecto-contagiosa por transfusão sanguínea. O teste NAT teve um acréscimo significativo na pesquisa dos vírus para a segurança na liberação de hemocompoentes. O teste foi introduzido nas rotinas de banco de sangue no intuito de reduzir o período de janela imunológica quando comparado aos testes sorológicos, fato este não observado nos anos de coleta de dados no Serviço de Hemoterapia referido neste estudo. (AU)

Introduction: Blood transfusions began to be performed in Brazil in the twentieth century as a form of therapeutic treatment. With the discovery of the HIV, the safety of donated blood became a priority. Therefore, candidates for blood donation are subjected to clinical and serological screening, in addition to the nucleic acid test (NAT), which has been mandatory since 2014 in blood banks. Methods: We conducted a retrospective study using data from blood donors at one hemotherapy service in Porto Alegre, state of Rio Grande do Sul, from 2015 to 2017. Serological and NAT results for HIV were evaluated. Results: Of the 28,625 samples of users of the hemotherapy service, 41 (0.14%) were HIV reagents and 21 (0.07%) had a reagent result for the NAT test. These data demonstrate a two-fold higher reactivity in the samples of serologically tested units as compared to the methodology used in NAT. Conclusions: Studies with different time periods are needed to further explain this association. The NAT test had a significant increase in the search for viruses and the safety in the release of blood components. The test was introduced in the blood bank routines in order to reduce the window period when compared to serological tests, a fact that was not observed in the years of data collection in the hemotherapy service referred to in this study. (AU)

El embarazo como una oportunidad de diagnóstico del virus de la inmunodeficiencia humana en mujeres inmigrantes en Catalunya / Pregnancy as an opportunity to diagnose human-immunodeficiency virus immigrant women in Catalonia

Introducción: La transmisión vertical (TV) es relevante en la epidemiología global del virus de la inmunodeficiencia humana (VIH), representando la principal vía de infección en la edad pediátrica. Los objetivos del estudio fueron determinar la tasa de TV del VIH y su tendencia epidemiológica entre la población autóctona e inmigrante en Catalunya entre 2000-2014. Métodos: Estudio observacional prospectivo de parejas madre-hijo expuestas al VIH atendidas en 12 hospitales de Catalunya en 2000-2014. Se estimó la tasa de TV del VIH aplicando un modelo bayesiano de regresión logística. Se utilizó el software estadístico R y WinBUGS. Resultados: Se analizaron 909 gestantes, 1.009 embarazos y 1.032 niños; datos de origen materno en el 79,4% de las mujeres, el 32,7% inmigrantes y de estas el 53,0% de África subsahariana. La tasa de TV del VIH fue del 1,4% (14/1.023; IC95% 0,8-2,3). El riesgo de TV del VIH fue 10 veces menor en mujeres con buen control virológico (p=0,01), al que llegaron 2 tercios de ellas. No hubo diferencias en la tasa de TV del VIH entre mujeres autóctonas e inmigrantes (p=0,6). La proporción de mujeres inmigrantes fue significativamente mayor en el período 2008-2014 (p<0,0001), en relación con el diagnóstico de la infección por VIH (p<0,0001) y la administración de antirretrovirales (p=0,02) durante el embarazo, y con la viremia indetectable próxima al parto (p<0,001). Conclusiones: Existe un aumento progresivo de gestantes inmigrantes con VIH en Catalunya. Aun siendo la mayoría diagnosticadas durante el embarazo, la tasa de TV del VIH no fue diferente a la hallada en las mujeres autóctonas (AU)

Introduction: Mother-to-child transmission (MTCT) is relevant in the global epidemiology of human-immunodeficiency virus (HIV), as it represents the main route of infection in children. The study objectives were to determine the rate of HIV-MTCT and its epidemiological trend between the Spanish-born and immigrant population in Catalonia in the period 2000-2014. Methods: A prospective observational study of mother-child pairs exposed to HIV, treated in 12 hospitals in Catalonia in the period 2000-2014. HIV-MTCT rate was estimated using a Bayesian logistic regression model. R and WinBUGS statistical software were used. Results: The analysis included 909 pregnant women, 1,009 pregnancies, and 1,032 children. Data on maternal origin was obtained in 79.4% of women, of whom 32.7% were immigrants, with 53.0% of these from sub-Saharan Africa. The overall HIV-MTCT rate was 1.4% (14/1,023; 95% CI; 0.8-2.3). The risk of MTCT-HIV was 10-fold lower in women with good virological control (P=.01), which was achieved by two-thirds of them. The proportion of immigrants was significantly higher in the period 2008-2014 (P<.0001), for the HIV-diagnosis (P<.0001), and antiretroviral administration (P=.02) during pregnancy, and for undetectable viral load next to delivery (P<.001). There were no differences in the rate of MTCT-HIV among Spanish-born and immigrant women (P=.6). Conclusions: There is a gradual increase in HIV pregnant immigrants in Catalonia. Although most immigrant women were diagnosed during pregnancy, the rate of MTCT-HIV was no different from the Spanish-born women (AU)

Epidemiología molecular de la criptococosis en un Hospital de enfermedades infecciosas de la Ciudad de Buenos Aires: análisis de 25 años / Molecular epidemiology of cryptococcosis in an infectious diseases hospital from the city of Buenos Aires: A 25 years experience

La criptococosis es una micosis grave de distribución universal, que afecta principalmente a huéspedes inmunocomprometidos. Es una de las principales causas de morbilidad y mortalidad en los pacientes infectados con el virus de la inmunodeficiencia humana (HIV). Provoca al menos 620 000 muertes al año, representando entre el 13% al 44% de la mortalidad en pacientes HIV positivos según datos de cohortes correspondientes a países en desarrollo. (1, 2) La letalidad de la criptococosis meníngea en estudios de Argentina y Brasil muestra valores que van desde el 26% hasta el 63%. El complejo Cryptococcus neoformans/ Cryptococcus gattii, es el responsable de esta enfermedad. Existen alrededor de 70 especies pero solo dos de ellas son patógenas para el hombre: C. neoformans y C. gattii. Se reconocen 8 genotipos de este complejo, C. neoformans: VNI y VNII (C. neoformans var. grubii), VNIII (C. neoformans híbrido intervariedad AD), VNIV (C. neoformans var. neoformans) y C. gattii: genotipos VGI, VGII, VGIII y VGIV. Se han descripto híbridos interespecie VNIV/VGI, VNI/VGI, VNI/VGII. Se estudiaron 207 aislamientos de Cryptococcus, elegidos aleatoriamente, de un total de 2593 pacientes con diagnóstico de criptococosis diseminada. A los mismos se les realizó la genotipificación mediante una PCR-RFLP del gen URA5, y posterior digestión enzimática con enzimas Sau96I y HhaI. De las 207 cepas estudiadas, 174 fueron VNI (84,05%), 14 VNII (6,76%), 10 VNIII (4,83%), 2 VNIV (0,97%), 3 VGI (1,45%), 3 VGII de (1,45%) y 1 VGIII (0,49%).

Cryptococcosis is a severe worldwide mycosis, which mainly affects immunocompromised hosts and is a major cause of morbidity and mortality in HIV-infected patients. It causes 620,000 annual deaths, accounting for 13-44 % of mortality in HIV-positive individuals in developing countries. Mortality rates of meningeal cryptococcosis in studies from Argentina and Brazil go from 26 to 63 %. Cryptococcus neoformans/Cryptococcus gattii is the species complex responsible for this disease. There are about 70 species, however, only two are human pathogens: C. neoformans and C. gattii. C. neoformans genotypes are VNI and VNII (C. neoformans var. grubii), VNIII (C. neoformans intervariety hybrid AD), VNIV (C. neoformans var. neoformans). C. gattii genotypes are VGI, VGII, VGIII and VGIV. Interspecies hybrids were described: VNIV/VGI, VNI/VGI, VNI/ VGII. A total of 207 Cryptococcus isolates were randomly selected from 2593 patients with diagnosis of disseminated cryptococcosis. Genotyping was performed by PCRRFLP of UR A5 gene with restriction enzyme digestion using Sau96I and HhaI enzymes. Among the 207 studied isolates, 174 resulted VNI (84.05%), 14 VNII (6.76%), 10 VNIII (4.83%), 2 VNIV (0.97%), 3 VGI (1.45%), 3 VGII (1.45%) and 1 VGIII (0.49%).

Coinfección VIH- lepra. A propósito de dos casos / No disponible

La lepra, enfermedad milenaria y estigmatizante, sigue estando vigente en nuestros días. Aunque en nuestro país no constituye un problema de salud, a nivel de país ni de provincia, se notifican casos todos los años. La población masculina se ve afectada en mayor cuantía que la población femenina a pesar de que la misma no distingue su aparición por sexo. Es una enfermedad infecciosa, crónica que afecta a la piel y los nervios periféricos, a la mucosa de las vías respiratorias superiores y también a los ojos, además de algunas otras estructuras. Ocurre en personas de cualquier edad, y es causada por el Mycobacterium leprae. A pesar de ser producida por una micobacteria como la Tuberculosis, no contamos con la evidencia de que la misma se comporte de forma oportunista en los casos VIH. Pensar en ella ante la presencia de lesiones de piel con pérdida de sensibilidad, permite el diagnostico precoz, esto reviste gran importancia ya que cura al enfermo, interrumpe la cadena de transmisión y evita las discapacidades. Presentamos los dos únicos casos diagnosticados en nuestra provincia de coinfección VIH/Lepra en los últimos 20 años. Ambos del sexo masculino, los cuales presentaron lesiones en piel después de sus diagnósticos de VIH y al ser estudiados se les diagnóstico lepra y se impuso tratamiento. Logrando la curación del primer caso y encontrándose en estos momentos en observación el segundo caso con evolución satisfactoria de sus lesiones en piel. Los pacientes con diagnóstico de VIH no escapan a la posibilidad de contraer lepra, ante lesiones en piel tanto los pacientes como los médicos deben pensar en ella. Con tratamiento se cura, un enfermo en tratamiento no contagia y las incapacidades se pueden prevenir

Leprosy, a millennial and stigmatizing disease continues is still active in our days. Although it no longer constitutes a problem of health at country or department level, are cases are notified every year. The male population is more affected that the female population. It is an infectious and chronic illness that affects skin and outlying nerves, the mucous of the upper respiratory tract and also the eyes, besides some other structures. It can appear in people of any age and is caused by Mycobacterium leprae. In spite of being caused by mycobacteria like Tuberculosis, we don’t have evidence that leprosy behaves in an opportunist manner in the HIV affected individuals. In the presence of skin lesions with loss of sensibility one should think of leprosy and this can lead to an early diagnosis and treatment, interrupting the transmission chain and avoiding disabilities. We present the only two cases diagnosed in our department of co infection HIV/Leprosy in the last 20 years. Both are males, presenting lesions in skin after their diagnoses of HIV and finally being diagnosed leprosy and treatment was implemented. The first case is cured and in observation and the second case presents a satisfactory evolution of his skin lesions. The patients diagnosed of HIV can contract leprosy, therefore in a case with skin lesions and HIV clinicians should consider leprosy. With treatment the patient can be cured, rendered non-infectious and kept free of disabilities

Estudio del impacto a nivel de salud pública del cribado universal del virus de la inmunodeficiencia humana en un servicio de Urgencias / Level of impact on the public health of universal human immunodeficiency virus screening in an Emergency Department

Introducción: El objetivo fue determinar la prevalencia de VIH y la aceptabilidad del uso de la prueba rápida en un servicio de Urgencias (SU) en Barcelona (6/07/2011-8/03/2013). Método: Estudio descriptivo que analizó la realización de la prueba rápida del VIH en fluido oral en un SU. La muestra se conformó por conveniencia y los participantes firmaron el consentimiento informado. Resultados reactivos confirmados por métodos convencionales. Resultado: A 2.140 se les ofreció realizar la prueba. La tasa de rechazo fue de un 5% (107/2.140). Tres sujetos (3/2.033 [0,15%]) tuvieron la prueba reactiva con confirmación del diagnóstico. Sujetos con mayor nivel educativo tenían una mayor probabilidad de aceptar realizar la prueba rápida de VIH en el SU (p<0,005). Conclusión: Se encontró una baja prevalencia de nuevos diagnósticos de VIH entre los participantes y una alta aceptabilidad a realizar la prueba rápida en el SU (AU)

Introduction: The aim of this study was to determine the prevalence of HIV and the acceptability of rapid testing in an emergency department (ED), Barcelona (6/07/2011 to 8/03/2013). Method: A convenience sample was used, depending on nurse availability in the ED. Participants signed an informed consent. Results were confirmed by conventional methods. Result: A total of 2,140 individuals were offered testing, and 5% rejected taking part (107/2,140). Three subjects (3/2,033 [0.15%]) had confirmed reactive test. Individuals with a higher education were more likely to perform a rapid HIV test in ED (P<.005). Conclusion: A low prevalence of new HIV diagnoses was found among participants, although there was a high acceptability rate to perform rapid testing in the ED (AU)

Prevalencia del virus de la inmunodeficiencia humana, virus de la hepatitis B y Treponema pallidum en reclusos del Centro de Detención Preventiva de Arica, Chile / Prevalence of HIV, hepatitis B virus and Treponema pallidum in inmates in the Preventive Detention Center of Arica, Chile

Resumen Introducción: Los grupos de riesgo para las infecciones de transmisión sexual (ITS) son trabajadores sexuales, drogadictos, la población joven de inicio sexual precoz, así como la población penal. Objetivo: Determinar la prevalencia de infección por virus de inmunodeficiencia humana (VIH), Treponema pallidum y virus de hepatitis B (VHB) en reclusos (hombres) del Centro de Detención Preventiva (CDP) de Arica. Material y Métodos: El estudio se efectuó en 140 reclusos, con consentimiento informado. Se realizó encuesta epidemiológica y toma de muestra sanguínea. Los exámenes positivos se enviaron al Hospital Regional de Arica para confirmación y posteriormente al Instituto de Salud Pública. Resultados: La prevalencia de ITS fue de 13,6%. La mayor frecuencia se observó en VDRL positivos (7,1%), seguido por infección por VIH (5,7%) y VHB (2,9%). Por edad, la mayor frecuencia (57,9%) se presentó en individuos bajo 31 años. El 63,2% se encontraban en situación de hacinamiento, en 42,1% la edad de inicio de la actividad sexual fue antes de los 15 años y 94,7% declaró ser consumidor de drogas. Conclusiones: El estudio reafirma los factores predisponentes a la transmisión de las ITS, como edad, inicio sexual precoz, consumo de drogas y hacinamiento, destacando que las prisiones son ambientes altamente vulnerables, donde la sobrepoblación, condición sexual, inicio sexual precoz, alto consumo de drogas y la carente visita conyugal proporcionan un contexto epidemiológico favorable para el incremento de ITS.

Background: The risk groups for sexual transmitted diseases (STDs) are sex workers, drug addicts, young people in early sexual initiation, and population in prison. Aim: To determine the prevalence of HIV, Treponema pallidum and hepatitis B Virus (HBV) in male inmates at the Preventive Detention Center (CDP) of Arica. Methods: The study was conducted in 140 inmates, with informed consent. Epidemiological survey and blood sampling was conducted. The positive tests were sent to the Hospital Regional of Arica for confirmation and the National Reference Laboratory for confirmation. Results: STD prevalence was 13.6%. The most prevalent was VDRL positive (7.1%) followed by HIV infection (5.7%) and HBV (2.9%). The highest rate (57.9%) occurred in individuals under 31 years old. 63.2% were in an overcrowded situation, 42.1% of cases corresponded to those whose age of sexual activity onset of was before age 15 and 94.7% used drugs. Conclusions: The study reasserts the predisposing factors for the transmission of STDs as age, early sexual debut, drug abuse and overcrowding, noting that prisons are highly vulnerable environments where overcrowding, sexual condition, early sexual initiation, high drug abuse and the lacking spouses visits provide an epidemiological context favorable for increased STD.

Detección de la infección por el VIH en los servicios de urgencias españoles: ¿realidad o utopía? / Detection of human immunodeficiency virus infection in Spanish emergency departments: reality or to utopian dream?

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Prevalencia y características de los pacientes con infección por virus de la inmunodeficiencia humana (VIH) diagnosticados de novo en un servicio de urgencias / Prevalence of undiagnosed human immunodeficiency virus infection in an emergency department and the characteristics of newly diagnosed patients

Objetivo: Estimar la prevalencia de la infección por el virus de la inmunodeficiencia humana (VIH) no diagnosticada entre la población que acude al servicio de urgencias hospitalario (SUH) mediante la realización rutinaria del test para VIH, y describir los factores asociados al diagnóstico. Método: Estudio descriptivo transversal que incluyó a los pacientes entre 15 y 75 años valorados en la zona de pacientes ambulantes del SUH y a los que se les realizó una analítica sanguínea por su motivo de consulta, en la que se obtuvo una muestra para realizar la prueba del VIH de manera rutinaria mediante test de enzimoinmunoanálisis (EIA) de 4ª generación. Los pacientes con resultado positivo fueron remitidos al servicio de infecciosas para seguimiento y tratamiento. Resultados: Se obtuvieron muestras de sangre de 1.722 pacientes. De estos, 21 (1,2%) rechazaron la realización de la serología y 19 (1,1%) no fueron finalmente analizados. La prevalencia de infección VIH no diagnosticada entre los 1.682 pacientes analizados fue del 0,6% [IC 95%: 0,23-0,96%]. Fue, sin significación estadística, mayor en los pacientes nacidos en otros países 0,97% [IC 95%: 0,3-2,20] y en los pacientes de 36 a 50 años 1,46% [IC 95%: 0,4-2,5]. Los factores que se asociaron con infección no conocida por VIH fueron ser hombre [OR: 5,78 (IC 95%: 1,0-31,4)], tener un motivo de consulta sugerente de infección [OR: 8,14 (IC 95%: 1,6-41,4)] y tener antecedentes de hepatitis [OR: 5,53 (IC 95%: 1,1-27,7)]. Conclusión: Hubo una alta prevalencia (0,6%) de infección por VIH no diagnosticada entre los pacientes atendidos en urgencias, los cuales mostraron una alta aceptación para realizar una serología VIH de manera rutinaria y universal. Estos resultados aconsejan mejorar las estrategias de detección de infección oculta por VIH (AU)

Objective: To estimate the prevalence of undiagnosed human immunodeficiency virus (HIV) infection detected by routine testing of patients seeking care in an emergency department and to describe the characteristics associated with new HIV-infection diagnosis. Methods: Walk-in patients between the ages of 15 and 75 years who required a blood test were included. Routine fourth-generation enzyme-linked immunoassays were performed to detect HIV infection in all samples extracted. Patients with positive results were referred to the infectious diseases department for monitoring and treatment. Results: Blood samples for 1722 patients were analyzed. Twenty-one patients (1.2%) refused to allow their samples to be tested; 19 more samples (1.1%) could not be tested. The prevalence of undiagnosed HIV infection among the remaining 1682 remaining patients was 0.6% (95% CI, 0.23%–0.96%). The prevalence tended to be nonsignificantly higher among patients born outside Spain (0.97% [95% CI, 0.3%–2.20%]) and in 36–50-year-olds (1.46% [95% CI, 0.4%–2.5%]). Characteristics associated with undiagnosed HIV infection were male sex (odds ratio [OR], 5.78 [95% CI, 1.0–31.4]), presenting with a chief complaint that suggested infection (OR, 8.14 [95% CI, 1.6–41.4]), and a history of hepatitis (OR, 5.53 [95% CI, 1.1–27.7]). Conclusions: The prevalence of undiagnosed HIV infection in our emergency department was high at 0.6%. The rate of patient acceptance of routine HIV testing was high. Strategies that target improving the detection of undiagnosed HIV infection are advisable (AU)

Cribado de VIH en atención primaria: ¿rutinario o dirigido? / HIV screening in primary care. Routine or targeted?

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En respuesta a: Cribado de VIH en atención primaria: ¿rutinario o dirigido? / In response to: HIV screening in Primary Care. Routine or targeted?

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Solicitud de VIH en condiciones indicadoras en atención primaria: resultados de una colaboración / Indicator condition guided human immunodeficiency virus requesting in primary health care: results of a collaboration

INTRODUCCIÓN: La búsqueda de pacientes con VIH mediante condiciones indicadoras (CI) es una estrategia para aumentar la detección precoz de dicho virus. El objetivo es analizar si una colaboración en 3 centros de atención primaria para concienciar de su importancia influyó en la proporción de serologías VIH solicitadas. MÉTODOS: Estudio multicéntrico, retrospectivo, de comparación basal y poscolaborativa. La colaboración consistió en sesiones formativas y la participación en el estudio HIDES (años 2009-2010). Se incluyeron pacientes entre 18 y 64 años con nuevos diagnósticos de herpes zóster, eccema seborreico, síndrome mononucleósico y leucopenia/trombocitopenia en 3 centros de atención primaria en 2008 (situación basal) y 2012 (poscolaborativa). Se evaluaron variables sociodemográficas, condicionantes de riesgo para VIH, solicitud de serología de VIH y resultado. RESULTADOS: Se incluyeron 1.219 CI (558 en 2008 y 661 en 2012). En 2008, el número de solicitudes de pruebas de VIH en pacientes con una CI fue del 3,9% y aumentó al 11,8% en 2012 (p < 0,0001). La tasa de infección por VIH fue del 2,2% (IC95%: 0,4-7,3) (n = 2). Se estimó que se habrían diagnosticado 25 nuevos casos (12 en 2008 y 13 en 2012) si se hubiera hecho la prueba a todos los pacientes con CI. Los factores predictores de solicitud del VIH fueron tener una CI en el año 2012, una menor edad, tener un síndrome mononucleósico y no ser español. CONCLUSIONES: Tras la colaboración con atención primaria, se triplicó la petición de VIH. Sin embargo, no se solicitó en el 88%, implicando pérdidas diagnósticas. Son necesarias nuevas estrategias para mejorar la detección precoz de VIH

INTRODUCTION: The search of HIV infected patients guided by indicator conditions (IC) is a strategy used to increase the early detection of HIV. The objective is to analyze whether a collaboration to raise awareness of the importance of early detection of HIV in 3 primary care centers influenced the proportion of HIV serology requested. METHODS: Multicenter retrospective study was conducted comparing the baseline and a post-collaboration period. The collaboration consisted of training sessions and participation in the HIDES study (years 2009-2010). Patients between 18 and 64 years old with newly diagnosed herpes zoster, seborrheic eczema, mononucleosis syndrome, and leucopenia/thrombocytopenia in 3 primary care centers in 2008 (baseline period) and 2012 (post-collaboration period). The sociodemographic variables, HIV risk conditions, requests for HIV serology, and outcomes were evaluated. RESULTS: A total of 1,219 ICs were included (558 in 2008 and 661 in 2012). In 2008 the number of HIV tests in patients with an IC was 3.9%, and rose to 11.8% in 2012 (P < .0001). The HIV infection rate was 2.2% (95% CI: 0.4-7.3) (n = 2). It was estimated that 25 new cases (12 in 2008 and 13 in 2012) would have been diagnosed if they had performed the test on all patients with IC. Predictors of HIV request were, having an IC in 2012, a younger age, having an mononucleosis syndrome, and not being Spanish. CONCLUSIONS: The HIV request demand tripled, after the collaboration with primary care centers, however in 88% the test was not requested, resulting in diagnostic losses. New strategies are needed to raise awareness of the importance of early detection of HIV

Coexistence of Kaposi sarcoma and gastric diffuse large B-cell lymphoma in a HIV-infected patient

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Porfiria cutánea tarda en un paciente VIH. ¿Papel secundario o protagonista del virus? / Porphyria cutanea tarda in an HIV-infected patient. Secondary role or protagonist of the virus?

La sospecha sobre la asociación de la infección por virus de la inmunodeficiencia humana (VIH), con el tipo I o forma esporádica de la porfiria cutánea tarda (PCT), comenzó pocos años después del descubrimiento del virus. La patogenia de la PCT en estos enfermos no está aclarada y, aunque en la mayoría de los pacientes se identifica más de un factor predisponenente, se considera que el propio VIH es un elemento independiente de riesgo para padecer la enfermedad. En esta comunicación se describe el caso de un paciente con infección por el VIH en el que se estableció de forma simultanea el diagnóstico de PCT

A suspicion about the association of human immunodeficiency virus (HIV) infection with type I or sporadic form of porphyria cutanea tarda (PCT) began a few years after the discovery of the virus. The pathogenesis of PCT in these patients is unclear and although majority of the patients have more than one underlying factor for the disease, it is considered that HIV itself is an independent risk element for its development. This communication describes the case of a patient with HIV infection in whom the diagnosis of PCT was established simultaneously