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1.
Infection ; 48(4): 553-558, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32430647

RESUMEN

To assess the HIV -1subtypes distribution in HIV-1 positive migrants living in Milan we studied 77 HIV-1 patients followed at the San Raffaele Hospital of Milan. Twenty subjects were born in Europe, 43 in the Americas, 10 in Africa and 4 in Asia. Unsafe heterosexual activity prevailed in migrants born in Africa and male homosexuality in those born in European, American and Asian countries (p = 0.05). The phylogeny showed that 38/77 (49.3%) subjects carried HIV-B subtype while the remaining strains were classified as not pure HIV-1 B subtypes 13/77 (16.9%) or recombinant forms 26/77 (33.8%). Female gender more frequently showed HIV-1 non-B strains and rarely HIV-1 B subtypes (12/39, 30.8% vs. 3/38, 7.9%, p = 0.02). Transmitted drug resistance was identified in 10/77 (13%) patients predominately with B subtype. Our data underscore a large heterogeneity in HIV-1 subtypes and a large proportion of recombinant forms.


Asunto(s)
Emigrantes e Inmigrantes , Infecciones por VIH/epidemiología , VIH-1/aislamiento & purificación , Adulto , Ciudades/epidemiología , Femenino , Infecciones por VIH/clasificación , Infecciones por VIH/virología , VIH-1/clasificación , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Filogenia , Adulto Joven
2.
Health Informatics J ; 25(2): 304-314, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-28486860

RESUMEN

This study investigates some of the data quality challenges facing the HIV surveillance system in the United States. Using the content analysis method, Center for Disease Control annual HIV surveillance reports (1982-2014) are systematically reviewed and evaluated against relevant data quality metrics from previous literature. Center for Disease Control HIV surveillance system has made several key achievements in the last decade. However, there are several outstanding challenges that need to be addressed. The data are unrepresentative, incomplete, inaccurate, and lacks the required granularity limiting its usage. These shortcomings weaken the country's ability to track, report, and respond to the new HIV epidemiological trends. Furthermore, the problems deter the country from properly identifying and targeting the key subpopulations that need the highest resources by virtue of being at the highest risk of HIV infection. Several recommendations are suggested to address these issues.


Asunto(s)
Exactitud de los Datos , Infecciones por VIH/clasificación , Vigilancia de la Población/métodos , Recolección de Datos/instrumentación , Recolección de Datos/métodos , Recolección de Datos/normas , Infecciones por VIH/epidemiología , Humanos , Estados Unidos/epidemiología
3.
Ann Emerg Med ; 72(1): 29-40.e2, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29310870

RESUMEN

STUDY OBJECTIVE: Newer combination HIV antigen-antibody tests allow detection of HIV sooner after infection than previous antibody-only immunoassays because, in addition to HIV-1 and -2 antibodies, they detect the HIV-1 p24 antigen, which appears before antibodies develop. We determine the yield of screening with HIV antigen-antibody tests and clinical presentations for new diagnoses of acute and established HIV infection across US emergency departments (EDs). METHODS: This was a retrospective study of 9 EDs in 6 cities with HIV screening programs that integrated laboratory-based antigen-antibody tests between November 1, 2012, and December 31, 2015. Unique patients with newly diagnosed HIV infection were identified and classified as having either acute HIV infection or established HIV infection. Acute HIV infection was defined as a repeatedly reactive antigen-antibody test result, a negative HIV-1/HIV-2 antibody differentiation assay, or Western blot result, but detectable HIV ribonucleic acid (RNA); established HIV infection was defined as a repeatedly reactive antigen-antibody test result and a positive HIV-1/HIV-2 antibody differentiation assay or Western blot result. The primary outcomes were the number of new HIV diagnoses and proportion of patients with laboratory-defined acute HIV infection. Secondary outcomes compared reason for visit and the clinical presentation of acute HIV infection. RESULTS: In total, 214,524 patients were screened for HIV and 839 (0.4%) received a new diagnosis, of which 122 (14.5%) were acute HIV infection and 717 (85.5%) were established HIV infection. Compared with patients with established HIV infection, those with acute HIV infection were younger, had higher RNA and CD4 counts, and were more likely to have viral syndrome (41.8% versus 6.5%) or fever (14.3% versus 3.4%) as their reason for visit. Most patients with acute HIV infection displayed symptoms attributable to acute infection (median symptom count 5 [interquartile range 3 to 6]), with fever often accompanied by greater than or equal to 3 other symptoms (60.7%). CONCLUSION: ED screening using antigen-antibody tests identifies previously undiagnosed HIV infection at proportions that exceed the Centers for Disease Control and Prevention's screening threshold, with the added yield of identifying acute HIV infection in approximately 15% of patients with a new diagnosis. Patients with acute HIV infection often seek ED care for symptoms related to seroconversion.


Asunto(s)
Anticuerpos Anti-VIH/sangre , Proteína p24 del Núcleo del VIH/sangre , Infecciones por VIH/diagnóstico , Adolescente , Adulto , Anciano , Pruebas Diagnósticas de Rutina , Servicio de Urgencia en Hospital , Femenino , Infecciones por VIH/sangre , Infecciones por VIH/clasificación , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven
5.
BMC Health Serv Res ; 17(1): 572, 2017 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-28818082

RESUMEN

BACKGROUND: Management of patients with chronic conditions relies on accurate measurement. It is unknown how transition to the ICD-10 coding system affected reporting of chronic condition rates over time. We measured chronic condition rates 2 years before and 1 year after the transition to ICD-10 to examine changes in prevalence rates and potential measurement issues in the Veterans Affairs (VA) health care system. METHODS: We developed definitions for 34 chronic conditions using ICD-9 and ICD-10 codes and compared the prevalence rates of these conditions from FY2014 to 2016 in a 20% random sample (1.0 million) of all VA patients. In each year we estimated the total number of patients diagnosed with the conditions. We regressed each condition on an indicator of ICD-10 (versus ICD-9) measurement to obtain the odds ratio associated with ICD-10. RESULTS: Condition prevalence estimates were similar for most conditions before and after ICD-10 transition. We found significant changes in a few exceptions. Alzheimer's disease and spinal cord injury had more than twice the odds of being measured with ICD-10 compared to ICD-9. HIV/AIDS had one-third the odds, and arthritis had half the odds of being measured with ICD-10. Alcohol dependence and tobacco/nicotine dependence had half the odds of being measured in ICD-10. CONCLUSION: Many chronic condition rates were consistent from FY14-16, and there did not appear to be widespread undercoding of conditions after ICD-10 transition. It is unknown whether increased sensitivity or undercoding led to decreases in mental health conditions.


Asunto(s)
Enfermedad Crónica/clasificación , Codificación Clínica , Clasificación Internacional de Enfermedades , Veteranos , Enfermedad de Alzheimer/clasificación , Enfermedad de Alzheimer/epidemiología , Enfermedades Cardiovasculares/clasificación , Enfermedades Cardiovasculares/epidemiología , Enfermedad Crónica/epidemiología , Infecciones por VIH/clasificación , Infecciones por VIH/epidemiología , Humanos , Trastornos Mentales/clasificación , Trastornos Mentales/epidemiología , Prevalencia , Traumatismos de la Médula Espinal/clasificación , Traumatismos de la Médula Espinal/epidemiología , Estados Unidos/epidemiología , United States Department of Veterans Affairs
6.
Lancet HIV ; 4(9): e411-e422, 2017 09.
Artículo en Inglés | MEDLINE | ID: mdl-28716545

RESUMEN

BACKGROUND: The demographics of the HIV epidemic in the USA have shifted towards older age. We aimed to establish the relationship between the processes of ageing and HIV infection in neurocognitive impairment. METHODS: With longitudinal data from the Multicenter AIDS Cohort Study, a long-term prospective cohort study of the natural and treated history of HIV infection among men who have sex with men in the USA, we examined the effect of ageing, HIV infection (by disease stage), and their interaction on five neurocognitive domains: information processing speed, executive function, episodic memory, working memory, and motor function. We controlled for duration of serostatus in a subanalysis, as well as comorbidities and other factors that affect cognition. Analyses were by linear mixed models for longitudinal data. FINDINGS: 5086 participants (47 886 visits) were included in the analytic sample (2278 HIV-seropositive participants contributed 20 477 visits and 2808 HIV-seronegative control participants contributed 27 409 visits). In an a-priori multivariate analysis with control variables including comorbidities and time since seroconversion, significant, direct negative effects of ageing were noted on all neurocognitive domains (p<0·0001 for all). Similar effects were noted for late-stage HIV disease progression on information processing speed (p=0·002), executive function (p<0·0001), motor function (p<0·0001), and working memory (p=0·001). Deleterious interaction effects were also noted in the domains of episodic memory (p=0·03) and motor function (p=0·02). INTERPRETATION: A greater than expected effect of ageing on episodic memory and motor function with advanced stages of HIV infection suggests that these two domains are most susceptible to the progression of neurocognitive impairment caused by ageing in individuals with HIV. This deficit pattern suggests differential damage to the hippocampus and basal ganglia (specifically nigrostriatal pathways). Older individuals with HIV infection should be targeted for regular screening for HIV-associate neurocognitive disorder, particularly with tests referable to the episodic memory and motor domains. FUNDING: National Institute of Mental Health.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida/complicaciones , Envejecimiento , Infecciones por VIH/complicaciones , Trastornos Neurocognitivos/etiología , Síndrome de Inmunodeficiencia Adquirida/epidemiología , Síndrome de Inmunodeficiencia Adquirida/virología , Adulto , Estudios de Cohortes , Función Ejecutiva , Infecciones por VIH/clasificación , Infecciones por VIH/epidemiología , Infecciones por VIH/virología , Humanos , Masculino , Memoria , Pruebas de Estado Mental y Demencia , Persona de Mediana Edad , Trastornos Neurocognitivos/virología , Estudios Prospectivos , Estados Unidos/epidemiología
7.
Ann R Coll Surg Engl ; 99(6): 459-463, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28660809

RESUMEN

INTRODUCTION This paper reviews the impact of the stage of human immunodeficiency virus (HIV) disease on the outcome of surgical sepsis. METHODS All adult emergency general surgical patients (aged >15 years) who fulfilled the criteria for sepsis or septic shock, with a documented surgical source of infection, and who were HIV positive were reviewed. RESULTS During the 5-year study period, a total of 675 patients with a documented surgical source of sepsis were managed by our service; 142 (21%) of these were HIV positive. Among the individuals who were HIV positive, the CD4 count was <200 cells/µl in 21 patients and ≥200 cells/µl in 121 patients. There was no difference between these two cohorts in terms of demography or spectrum of surgical conditions. The range of surgical procedures and complications was also similar in both groups. Nevertheless, patients with a CD count of <200 cells/µl had a significantly longer length of hospital stay than those in the cohort with ≥200 cells/µl. For HIV positive patients with a CD4 count of <200 cells/µl, the mortality rate was 66.7% (14/21) while the mortality rate for individuals with HIV and a CD4 count of ≥200 cells/µl was 2.5% (2/121). This difference was statistically significant (p<0.001). CONCLUSIONS The clinical presentation and spectrum of surgical sepsis disease in cases with stage 1 and stage 2 HIV is not markedly different. However, in patients with a CD4 count of <200 cells/µl, the length of hospital stay and mortality is significantly higher. Stage of HIV disease must be considered when stratifying patients' risk for surgery.


Asunto(s)
Recuento de Linfocito CD4/estadística & datos numéricos , Infecciones por VIH/clasificación , Infecciones por VIH/epidemiología , Complicaciones Posoperatorias/epidemiología , Sepsis/epidemiología , Adulto , Femenino , Humanos , Masculino , Estudios Retrospectivos , Sudáfrica/epidemiología , Resultado del Tratamiento
8.
Lancet HIV ; 4(9): e393-e401, 2017 09.
Artículo en Inglés | MEDLINE | ID: mdl-28579225

RESUMEN

BACKGROUND: HIV disease staging with referral laboratory-based CD4 cell count testing is a key barrier to the initiation of antiretroviral treatment (ART). Point-of-care CD4 cell counts can improve linkage to HIV care among people living with HIV, but its effect has not been assessed with a randomised controlled trial in the context of home-based HIV counselling and testing (HBCT). METHODS: We did a two-arm, cluster-randomised, controlled efficacy trial in two districts of western Kenya with ongoing HBCT. Housing compounds were randomly assigned (1:1) to point-of-care CD4 cell counts (366 compounds with 417 participants) or standard-of-care (318 compounds with 353 participants) CD4 cell counts done at one of three referral laboratories serving the study catchment area. In each compound, we enrolled people with HIV not engaged in care in the previous 6 months. All participants received post-test counselling and referral for HIV care. Point-of-care test participants received additional counselling on the result, including ART eligibility if CD4 was less than 350 cells per µL, the cutoff in Kenyan guidelines. Participants were interviewed 6 months after enrolment to ascertain whether they sought HIV care, verified through chart reviews at 23 local clinics. The prevalence of loss to follow-up at 6 months (LTFU) was listed as the main outcome in the study protocol. We analysed linkage to care at 6 months (defined as 1-LTFU) as the primary outcome. All analyses were by intention to treat. This trial is registered at ClinicalTrials.gov, number NCT02515149. FINDINGS: We enrolled 770 participants between July 1, 2013, and Feb 28, 2014. 692 (90%) had verified linkage to care status and 78 (10%) were lost to follow-up. Of 371 participants in the point-of-care group, 215 (58%) had linked to care within 6 months versus 108 (34%) of 321 in the standard-of-care group (Cox proportional multivariable hazard ratio [HR] 2·14, 95% CI 1·67-2·74; log rank p<0·0001). INTERPRETATION: Point-of-care CD4 cell counts in a resource-limited HBCT setting doubled linkage to care and thereby improved ART initiation. Given the substantial economic and logistic hindrances to providing ART for all people with HIV in resource-limited settings in the near term, point of care CD4 cell counts might have a role in prioritising care and improving linkage to care. FUNDING: US Centers for Disease Control and Prevention.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Recuento de Linfocito CD4/instrumentación , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Sistemas de Atención de Punto , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Recuento de Linfocito CD4/métodos , Consejo , Femenino , Infecciones por VIH/clasificación , Infecciones por VIH/epidemiología , Humanos , Kenia/epidemiología , Perdida de Seguimiento , Masculino , Tamizaje Masivo/métodos , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Carga Viral , Adulto Joven
9.
Crit Care ; 21(1): 85, 2017 04 04.
Artículo en Inglés | MEDLINE | ID: mdl-28376908

RESUMEN

BACKGROUND: The aim of the Simplified Acute Physiology Score (SAPS) II and SAPS 3 is to predict the mortality of patients admitted to intensive care units (ICUs). Previous studies have suggested that the calibration of these scores may vary across countries, centers, and/or characteristics of patients. In the present study, we aimed to assess determinants of the calibration of these scores. METHODS: We assessed the calibration of the SAPS II and SAPS 3 scores among 5266 patients admitted to ICUs during a 4-week period at 120 centers in 17 European countries. We obtained calibration curves, Brier scores, and standardized mortality ratios. Points attributed to SAPS items were reevaluated and compared with those of the original scores. Finally, we tested associations between the calibration and center characteristics. RESULTS: The mortality was overestimated by both scores: The standardized mortality ratios were 0.75 (95% CI 0.71-0.79) for the SAPS II score and 0.91 (95% CI 0.86-0.96) for the SAPS 3 score. This overestimation was partially explained by changes in associations between some items of the scores and mortality, especially the heart rate, Glasgow Coma Scale score, and diagnosis of AIDS for SAPS II. The calibration of both scores was better in countries with low health expenditures. The between-center variability in calibration curves was much greater than expected by chance. CONCLUSIONS: Both scores overestimate current mortality among European ICU patients. The magnitude of the miscalibration of SAPS II and SAPS 3 scores depends not only on patient characteristics but also on center characteristics. Furthermore, much between-center variability in calibration remains unexplained by these factors. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT01422070 . Registered 19 August 2011.


Asunto(s)
Calibración/normas , Mortalidad Hospitalaria , Probabilidad , Puntuación Fisiológica Simplificada Aguda , Anciano , Ensayos Clínicos como Asunto , Femenino , Escala de Coma de Glasgow , Infecciones por VIH/clasificación , Infecciones por VIH/mortalidad , Frecuencia Cardíaca , Humanos , Unidades de Cuidados Intensivos/organización & administración , Tiempo de Internación , Masculino , Persona de Mediana Edad
10.
J Immigr Minor Health ; 19(4): 891-896, 2017 08.
Artículo en Inglés | MEDLINE | ID: mdl-27395379

RESUMEN

Little is known about the frequency of ongoing HIV transmission within U.S. African immigrant communities. We used HIV surveillance and partner services data to describe African-born persons newly reported with HIV infection in King County (KC), WA from 1/1/2010 to 12/31/2013. We performed phylogenetic clustering analysis of HIV-1 pol to identify putative transmission events within this population. From 2010 to 2013, 1148 KC adults were reported with HIV, including 102 (9 %) born in Africa. Forty-one African-born cases were interviewed and reported diagnosis after arrival in the U.S. Fourteen (34 %) reported ≥1 negative test prior to diagnosis, and 9 (26 %) reported ≥1 negative test after U.S. arrival. Pol genotypes were available for seven of these nine. For two of these seven, a KC case was the nearest phylogenetic neighbor; two others were infected with subtype B virus. We found substantial evidence of ongoing HIV transmission in the African community of KC.


Asunto(s)
Negro o Afroamericano/estadística & datos numéricos , Emigrantes e Inmigrantes/estadística & datos numéricos , Infecciones por VIH/clasificación , Infecciones por VIH/etnología , Adulto , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/transmisión , Humanos , Masculino , Persona de Mediana Edad , Washingtón/epidemiología
12.
PLoS One ; 11(4): e0152327, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27065005

RESUMEN

HIV incidence estimates are used to monitor HIV-1 infection in the United States. Use of laboratory biomarkers that distinguish recent from longstanding infection to quantify HIV incidence rely on having accurate knowledge of the average time that individuals spend in a transient state of recent infection between seroconversion and reaching a specified biomarker cutoff value. This paper describes five estimation procedures from two general statistical approaches, a survival time approach and an approach that fits binomial models of the probability of being classified as recently infected, as a function of time since seroconversion. We compare these procedures for estimating the mean duration of recent infection (MDRI) for two biomarkers used by the U.S. National HIV Surveillance System for determination of HIV incidence, the Aware BED EIA HIV-1 incidence test (BED) and the avidity-based, modified Bio-Rad HIV-1/HIV-2 plus O ELISA (BRAI) assay. Collectively, 953 specimens from 220 HIV-1 subtype B seroconverters, taken from 5 cohorts, were tested with a biomarker assay. Estimates of MDRI using the non-parametric survival approach were 198.4 days (SD 13.0) for BED and 239.6 days (SD 13.9) for BRAI using cutoff values of 0.8 normalized optical density and 30%, respectively. The probability of remaining in the recent state as a function of time since seroconversion, based upon this revised statistical approach, can be applied in the calculation of annual incidence in the United States.


Asunto(s)
Biomarcadores/análisis , Antígenos VIH/inmunología , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , VIH-1/inmunología , Serodiagnóstico del SIDA , Afinidad de Anticuerpos , Ensayos Clínicos como Asunto , Estudios de Seguimiento , Infecciones por VIH/clasificación , Infecciones por VIH/inmunología , Seropositividad para VIH , VIH-1/aislamiento & purificación , Humanos , Técnicas para Inmunoenzimas , Incidencia , Estudios Longitudinales , Pronóstico , Pruebas Serológicas , Factores de Tiempo , Estados Unidos/epidemiología , Carga Viral
13.
Sante Publique ; 28 Suppl 1: S89-100, 2016 06 08.
Artículo en Francés | MEDLINE | ID: mdl-28155799

RESUMEN

With the arrival of triple combination therapy in 1996-1997, HIV infection, considered up until then to be a life-threatening condition, changed statuses within the realm of public health actions Progressively likened to a "chronic illness", the discourse on HIV prevention targeting people living with HIV (PLHIV) began to evolve. A review of the scientific literature and the journals of four national HIV associations published between 1990 and 2010 shows that physical activities, previously discouraged because considered to be dangerous, have become increasingly presented as a means of improving quality of life and are increasingly recommended for PLHIV. This article studies this reconfiguration of the discourse on HIV prevention, as well as its effects on the discourse conveyed by HIV associations. The article shows how the new classification of HIV as a "chronic illness", on the basis of scientific expertise, has led to a modified discourse on prevention, including the recommendation of regular and controlled physical activity. This new orientation has contributed to the restructuring of HIV associations which relay this discourse and modify their organization and services, increasingly offering access to physical activities. However, this raises the question of the effects of this new representation of physical activities, as there has been little conside-ration of the difficulties encountered by PLHIV to respond to these repeated encouragements to modify their lifestyles in order to be "good" chronically ill patients. .


Asunto(s)
Ejercicio Físico , Infecciones por VIH , Promoción de la Salud/organización & administración , Síndrome de Inmunodeficiencia Adquirida/clasificación , Síndrome de Inmunodeficiencia Adquirida/prevención & control , Síndrome de Inmunodeficiencia Adquirida/rehabilitación , Enfermedad Crónica/clasificación , Infecciones por VIH/clasificación , Infecciones por VIH/prevención & control , Infecciones por VIH/rehabilitación , Promoción de la Salud/clasificación , Promoción de la Salud/métodos , Humanos , Salud Pública/clasificación , Salud Pública/métodos , Calidad de Vida , Grupos de Autoayuda/organización & administración
14.
Sud Med Ekspert ; 58(2): 27-29, 2015.
Artículo en Ruso | MEDLINE | ID: mdl-26036069

RESUMEN

The objective of the present study was to formulate the principles of coding and identification of the primary cause of death from the diseases induced by the human immunodeficiency virus in accordance with the 10th edition of the international classification of diseases (ICD-10) taking into consideration the official amendments introduced by WHO. The rules of formulation of medical death certificates and peculiarities of formulation of forensic medical diagnoses in the cases of death from the diseases induced by the human immunodeficiency virus are considered. The authors emphasize the importance to observe these rules in order to ensure obtaining the statistically significant information about the mortality caused by H IV infection.


Asunto(s)
Causas de Muerte , Certificado de Defunción , Medicina Legal/estadística & datos numéricos , Infecciones por VIH/patología , Infecciones por VIH/clasificación , Humanos
15.
J Int AIDS Soc ; 17: 18932, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24929097

RESUMEN

INTRODUCTION: The World Health Organization (WHO) recommends that HIV-positive adults with CD4 count ≤500 cells/mm(3) initiate antiretroviral therapy (ART). In many countries of sub-Saharan Africa, CD4 count is not widely available or consistently used and instead the WHO clinical staging system is used to determine ART eligibility. However, concerns have been raised regarding its discriminatory ability to identify patients eligible to start ART. We therefore reviewed the accuracy of WHO stage 3 or 4 assessment in identifying ART eligibility according to CD4 count thresholds for ART initiation. METHODS: We systematically searched PubMed and Global Health databases and conference abstracts using a comprehensive strategy for studies that compared the results of WHO clinical staging with CD4 count thresholds. Studies performed in sub-Saharan Africa and published in English between 1998 and 2013 were eligible for inclusion according to our predefined study protocol. Two authors independently extracted data and assessed methodological quality and risk of bias using the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS-2) tool. Summary estimates of sensitivity and specificity were derived for each CD4 count threshold and hierarchical summary receiver operator characteristic curves were plotted. RESULTS: Fifteen studies met the inclusion criteria, including 25,032 participants from 14 countries. Most studies assessed individuals attending ART clinics prior to treatment initiation. WHO clinical stage 3 or 4 disease had a sensitivity of 60% (95% CI: 45-73%, Q=914.26, p<0.001) and specificity of 73% (95% CI: 60-83%, Q=1439.43, p<0.001) for a CD4 threshold of ≤200 cells/mm(3) (11 studies); sensitivity and specificity for a threshold of CD4 count ≤350 cells/mm(3) were 45% (95% CI: 26-66%, Q=1607.31, p<0.001) and 85% (95% CI: 69-93%, Q=896.70, p<0.001), respectively (six studies). For the threshold of CD4 count ≤500 cells/mm(3) sensitivity was 14% (95% CI: 13-15%) and specificity was 95% (95% CI: 94-96%) (one study). CONCLUSIONS: When used for individual treatment decisions, WHO clinical staging misses a high proportion of individuals who are ART eligible by CD4 count, with sensitivity falling as CD4 count criteria rises. Access to accurate, accessible, robust and affordable CD4 count testing methods will be a pressing need for as long as ART initiation decisions are based on criteria other than seropositivity.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/diagnóstico , Adulto , África del Sur del Sahara , Recuento de Linfocito CD4/normas , Infecciones por VIH/clasificación , Infecciones por VIH/tratamiento farmacológico , Humanos , Guías de Práctica Clínica como Asunto/normas , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad , Organización Mundial de la Salud
16.
Neurology ; 82(23): 2055-62, 2014 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-24814848

RESUMEN

OBJECTIVE: While HIV-associated neurocognitive disorders (HAND) remain prevalent despite combination antiretroviral therapy (CART), the clinical relevance of asymptomatic neurocognitive impairment (ANI), the most common HAND diagnosis, remains unclear. We investigated whether HIV-infected persons with ANI were more likely than those who were neurocognitively normal (NCN) to experience a decline in everyday functioning (symptomatic decline). METHODS: A total of 347 human participants from the CNS HIV Anti-Retroviral Therapy Effects Research (CHARTER) cohort were NCN (n = 226) or had ANI (n = 121) at baseline. Neurocognitive assessments occurred approximately every 6 months, with median (interquartile range) follow-up of 45.2 (28.7-63.7) months. Symptomatic decline was based on self-report (SR) or objective, performance-based (PB) problems in everyday functioning. Proportional hazards modeling was used to generate risk ratios for progression to symptomatic HAND after adjusting for baseline and time-dependent covariates, including CD4+ T-lymphocyte count (CD4), virologic suppression, CART, and mood. RESULTS: The ANI group had a shorter time to symptomatic HAND than the NCN after adjusting for baseline predictors: adjusted risk ratios for symptomatic HAND were 2.0 (confidence interval [CI] 1.1-3.6; p = 0.02) for SR, 5.8 (CI 3.2-10.7; p < 0.0001) for PB, and 3.2 (CI 2.0-5.0; p < 0.0001) for either SR or PB. Current CD4 and depression were significant time-dependent covariates, but antiretroviral regimen, virologic suppression, and substance abuse or dependence were not. CONCLUSIONS: This longitudinal study demonstrates that ANI conveys a 2-fold to 6-fold increase in risk for earlier development of symptomatic HAND, supporting the prognostic value of the ANI diagnosis in clinical settings. Identifying those at highest risk for symptomatic decline may offer an opportunity to modify treatment to delay progression.


Asunto(s)
Complejo SIDA Demencia/fisiopatología , Terapia Antirretroviral Altamente Activa , Infecciones por VIH/fisiopatología , Actividades Cotidianas , Recuento de Linfocito CD4 , Linfocitos T CD4-Positivos , Progresión de la Enfermedad , Infecciones por VIH/clasificación , Humanos , Oportunidad Relativa , Valor Predictivo de las Pruebas , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Riesgo , Factores de Tiempo , Carga Viral
17.
AIDS Care ; 26(10): 1318-25, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24779521

RESUMEN

Individuals with unknown HIV status are at risk for undiagnosed HIV, but practical and reliable methods for identifying these individuals have not been described. We developed an algorithm to identify patients with unknown HIV status using data from the electronic medical record (EMR) of a large health care system. We developed EMR-based criteria to classify patients as having known status (HIV-positive or HIV-negative) or unknown status and applied these criteria to all patients seen in the affiliated health care system from 2008 to 2012. Performance characteristics of the algorithm for identifying patients with unknown HIV status were calculated by comparing a random sample of the algorithm's results to a reference standard medical record review. The algorithm classifies all patients as having either known or unknown HIV status. Its sensitivity and specificity for identifying patients with unknown status are 99.4% (95% CI: 96.5-100%) and 95.2% (95% CI: 83.8-99.4%), respectively, with positive and negative predictive values of 98.7% (95% CI: 95.5-99.8%) and 97.6% (95% CI: 87.1-99.1%), respectively. Using commonly available data from an EMR, our algorithm has high sensitivity and specificity for identifying patients with unknown HIV status. This algorithm may inform expanded HIV testing strategies aiming to test the untested.


Asunto(s)
Algoritmos , Registros Electrónicos de Salud , Infecciones por VIH/clasificación , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Seronegatividad para VIH , Seropositividad para VIH/diagnóstico , Seropositividad para VIH/epidemiología , Humanos , Ciudad de Nueva York/epidemiología , Estándares de Referencia , Sensibilidad y Especificidad
19.
MMWR Recomm Rep ; 63(RR-03): 1-10, 2014 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-24717910

RESUMEN

Following extensive consultation and peer review, CDC and the Council of State and Territorial Epidemiologists have revised and combined the surveillance case definitions for human immunodeficiency virus (HIV) infection into a single case definition for persons of all ages (i.e., adults and adolescents aged ≥13 years and children aged <13 years). The revisions were made to address multiple issues, the most important of which was the need to adapt to recent changes in diagnostic criteria. Laboratory criteria for defining a confirmed case now accommodate new multitest algorithms, including criteria for differentiating between HIV-1 and HIV-2 infection and for recognizing early HIV infection. A confirmed case can be classified in one of five HIV infection stages (0, 1, 2, 3, or unknown); early infection, recognized by a negative HIV test within 6 months of HIV diagnosis, is classified as stage 0, and acquired immunodeficiency syndrome (AIDS) is classified as stage 3. Criteria for stage 3 have been simplified by eliminating the need to differentiate between definitive and presumptive diagnoses of opportunistic illnesses. Clinical (nonlaboratory) criteria for defining a case for surveillance purposes have been made more practical by eliminating the requirement for information about laboratory tests. The surveillance case definition is intended primarily for monitoring the HIV infection burden and planning for prevention and care on a population level, not as a basis for clinical decisions for individual patients. CDC and the Council of State and Territorial Epidemiologists recommend that all states and territories conduct case surveillance of HIV infection using this revised surveillance case definition.


Asunto(s)
Infecciones por VIH/clasificación , Infecciones por VIH/epidemiología , Vigilancia de la Población/métodos , Adolescente , Adulto , Linfocitos T CD4-Positivos , Niño , Preescolar , ADN Viral/análisis , Anticuerpos Anti-VIH/análisis , Infecciones por VIH/diagnóstico , Humanos , Lactante , ARN Viral/análisis , Estados Unidos/epidemiología
20.
J Int Assoc Provid AIDS Care ; 13(3): 206-13, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-23603632

RESUMEN

BACKGROUND: Factors associated with initial methicillin-resistant Staphylococcus aureus (MRSA) skin and soft-tissue infections (SSTIs) and their recurrence have not been fully elucidated among HIV-infected persons. METHODS: We retrospectively evaluated a large cohort of HIV-infected patients from 1993 to 2010 for culture-proven MRSA SSTIs. Separate logistic regression models evaluated factors associated with initial and recurrent infections. RESULTS: Of the 794 patients, 63 (8%) developed an initial infection (19.8 infections/1000 person years [PY]); risk factors included CD4 count <500 cells/mm(3) and HIV RNA level ≥400 copies/mL (P < .01), US Centers for Disease Control and Prevention (CDC) stage C versus A/B (P < .01), and injection drug use (IDU, P < .01). In all, 27% developed recurrence (206 infections/1000 PY); risk factors included hospital admission (P = .02). Minocycline for treatment of the initial infection was associated with an 80% decreased odds for recurrence (P = .03). CONCLUSION: HIV control and avoidance of IDU may be useful in reducing rates of MRSA SSTIs among HIV-infected persons.


Asunto(s)
Coinfección/microbiología , Infecciones por VIH/complicaciones , Staphylococcus aureus Resistente a Meticilina , Infecciones de los Tejidos Blandos/microbiología , Infecciones Cutáneas Estafilocócicas/complicaciones , Adulto , Antibacterianos/uso terapéutico , Recuento de Linfocito CD4 , Estudios de Cohortes , Coinfección/virología , Femenino , Infecciones por VIH/clasificación , Hospitalización , Humanos , Masculino , Minociclina/uso terapéutico , Análisis Multivariante , ARN Viral/sangre , Recurrencia , Estudios Retrospectivos , Factores de Riesgo , Infecciones de los Tejidos Blandos/complicaciones , Infecciones de los Tejidos Blandos/tratamiento farmacológico , Infecciones Cutáneas Estafilocócicas/tratamiento farmacológico , Abuso de Sustancias por Vía Intravenosa , Adulto Joven
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