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BACKGROUND: Long-term persistence of Ebola virus (EBOV) in immunologically privileged sites has been implicated in recent outbreaks of Ebola virus disease (EVD) in Guinea and the Democratic Republic of Congo. This study was designed to understand how the acute course of EVD, convalescence, and host immune and genetic factors may play a role in prolonged viral persistence in semen. METHODS: A cohort of 131 male EVD survivors in Liberia were enrolled in a case-case study. "Early clearers" were defined as those with 2 consecutive negative EBOV semen test results by real-time reverse-transcription polymerase chain reaction (rRT-PCR) ≥2 weeks apart within 1 year after discharge from the Ebola treatment unit or acute EVD. "Late clearers" had detectable EBOV RNA by rRT-PCR >1 year after discharge from the Ebola treatment unit or acute EVD. Retrospective histories of their EVD clinical course were collected by questionnaire, followed by complete physical examinations and blood work. RESULTS: Compared with early clearers, late clearers were older (median, 42.5 years; P < .001) and experienced fewer severe clinical symptoms (median 2, P = .006). Late clearers had more lens opacifications (odds ratio, 3.9 [95% confidence interval, 1.1-13.3]; P = .03), after accounting for age, higher total serum immunoglobulin G3 (IgG3) titers (P = .005), and increased expression of the HLA-C*03:04 allele (0.14 [.02-.70]; P = .007). CONCLUSIONS: Older age, decreased illness severity, elevated total serum IgG3 and HLA-C*03:04 allele expression may be risk factors for the persistence of EBOV in the semen of EVD survivors. EBOV persistence in semen may also be associated with its persistence in other immunologically protected sites, such as the eye.
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Ebolavirus , Fiebre Hemorrágica Ebola , Humanos , Masculino , Ebolavirus/genética , Fiebre Hemorrágica Ebola/epidemiología , Semen , Liberia/epidemiología , Estudios Retrospectivos , Antígenos HLA-C , Sobrevivientes , Factores de RiesgoRESUMEN
The Structured Assessment of Protective Factors for Violence Risk-Youth Version (SAPROF-YV; de Vries Robbé et al., 2015) was designed specifically to assess strengths as a complement to risk assessment tools. We retrospectively examined its reliability and validity in 305 Canadian community-sentenced youth, both in the overall sample and in male and female, and Black and White, subgroups. In all groups, the total score had strong internal consistency, inter-rater reliability, and convergent validity, and significantly predicted general recidivism at 3-year fixed follow-up. The SAPROF-YV showed incremental validity over the YLS/CMI only in Black youth. In the total sample, a moderation effect was identified whereby strengths were protective at lower levels of risk but not for moderate or high risk youth. The SAPROF-YV shows promising reliability and validity; however, more research is needed before clear guidance can be provided regarding the use of this measure in clinical practice.
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INTRODUCTION: Ebola virus (EBOV), species Zaire ebolavirus, may persist in the semen of male survivors of Ebola virus disease (EVD). We conducted a study of male survivors of the 2014-2016 EVD outbreak in Liberia and evaluated their immune responses to EBOV. We report here findings from the serologic testing of blood for EBOV-specific antibodies, molecular testing for EBOV in blood and semen, and serologic testing of peripheral blood mononuclear cells (PBMCs) in a subset of study participants. METHODS: We tested for EBOV RNA in blood by quantitative reverse transcription polymerase chain reaction (qRT-PCR), and for anti-EBOV-specific immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies by enzyme-linked immunosorbent assay (ELISA) for 126 study participants. We performed PBMC analysis on a subgroup of 26 IgG-negative participants. RESULTS: All 126 participants tested negative for EBOV RNA in blood by qRT-PCR. The blood of 26 participants tested negative for EBOV-specific IgG antibodies by ELISA. PBMCs were collected from 23/26 EBOV IgG-negative participants. Of these, 1/23 participants had PBMCs that produced anti-EBOV-specific IgG antibodies upon stimulation with EBOV-specific glycoprotein (GP) and nucleoprotein (NP) antigens. CONCLUSIONS: The blood of EVD survivors, collected when they did not have symptoms meeting the case definition for acute or relapsed EVD, is unlikely to pose a risk for EBOV transmission. We identified 1 IgM/IgG negative participant who had PBMCs that produced anti-EBOV-specific antibodies upon stimulation. Immunogenicity following acute EBOV infection may exist along a spectrum, and absence of antibody response should not be exclusionary in determining an individual's status as a survivor of EVD.
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Ebolavirus , Fiebre Hemorrágica Ebola , Anticuerpos Antivirales , Ebolavirus/genética , Humanos , Leucocitos Mononucleares , Liberia/epidemiología , Masculino , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Transcripción Reversa , Semen , SobrevivientesRESUMEN
The epidemiology of Rift Valley fever virus (RVFV) and Crimean-Congo hemorrhagic fever virus (CCHFV) in Jordan is unknown. Our investigation showed 3% of 989 tested dairy cattle, sheep, and goats were RVFV seropositive and 14% were CCHFV seropositive. Ongoing surveillance is needed to assess risk to humans and protect public health.
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Virus de la Fiebre Hemorrágica de Crimea-Congo , Fiebre Hemorrágica de Crimea/epidemiología , Fiebre del Valle del Rift/epidemiología , Virus de la Fiebre del Valle del Rift , Animales , Anticuerpos Antivirales , Bovinos , Virus de la Fiebre Hemorrágica de Crimea-Congo/inmunología , Fiebre Hemorrágica de Crimea/veterinaria , Jordania/epidemiología , Virus de la Fiebre del Valle del Rift/inmunología , Rumiantes , Ovinos , ZoonosisRESUMEN
BACKGROUND: Perinatal mental disorders are a leading contributor to morbidity and mortality during pregnancy and postpartum, and are highly treatable when identified early. However, many women, especially in low and middle-income countries, lack access to routine identification and treatment of mental illness in public health settings. The prevalence of perinatal depression and anxiety disorders, common mental disorders, is three times higher for South African women relative to women in high-income countries. The public health system has begun to integrate mental health into maternal care, making South Africa a relevant case study of perinatal mental healthcare. Yet studies are few. We sought to investigate healthcare providers' perceptions of the barriers to early identification and screening of common perinatal mental disorders in public health facilities in South Africa. METHODS: Employing qualitative methods, we used purposive sampling to identify study participants, supplemented by snowball sampling. From September 2019-June 2020, we conducted in-depth interviews with 24 key informants in South Africa. All interviews were recorded and transcribed verbatim. We used a thematic approach to generate initial analytical themes and then conducted iterative coding to refine them. We adapted a delivery systems' framework to organise the findings, depicted in a conceptual map. RESULTS: Reported barriers to early identification and treatment of mental illness in the perinatal period encompassed four levels: (1) structural factors related to policies, systems and resources; (2) socio-cultural factors, including language and cultural barriers; (3) organisational factors, such as lack of provider preparation and training and overburdened clinics; and (4) individual patient and healthcare provider factors. CONCLUSION: Barriers act across multiple levels to reduce quality mental health promotion and care, thereby creating an environment where inequitable access to identification of mental disorders and quality mental health services was embedded into systems and everyday practice. Integrated interventions across multiple levels are essential to improve the early identification and treatment of mental illness in perinatal women in South Africa. We provide recommendations derived from our findings to overcome barriers at each of the four identified levels.
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Accesibilidad a los Servicios de Salud , Servicios de Salud Mental , Femenino , Personal de Salud , Humanos , Percepción , Embarazo , Investigación Cualitativa , Sudáfrica/epidemiologíaRESUMEN
African Americans in Mississippi have the highest HIV-related mortality and poverty rates in the USA, and they tend to be religious. Attitudes toward gender and sexuality are changing, yet few studies have investigated religion and spirituality among special populations living with HIV. Using grounded theory and qualitative methods, we investigated the experience of health and illness of a low-income, socially marginalised population living with HIV in two locations of Mississippi in 2015. In a context of high stigma and HIV-related health disparities, individuals turned, or returned, to religion, church and spirituality as sources of community and strength, which also motivated safer health behaviours. Findings underscore how religion and spirituality are enabling social determinants of health that are under-explored, untapped, potentially culturally acceptable, sustainable interventions at the community-level. We posit, given diminished funding for community-based services, the most significant influence churches could exert is in decreasing HIV stigma. Given the current US plan to end HIV by 2030, with appropriate stakeholder participation, the role of religion, spirituality and clergy could be further amplified via linkage to care providers and the 'normalisation' of the HIV discourse, to address disparities and improve the health of African Americans.
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Infecciones por VIH , Espiritualidad , Negro o Afroamericano , Humanos , Mississippi , ReligiónRESUMEN
BACKGROUND: During 2017, a multistate outbreak investigation occurred after the confirmation of Seoul virus (SEOV) infections in people and pet rats. A total of 147 humans and 897 rats were tested. METHODS: In addition to immunoglobulin (Ig)G and IgM serology and traditional reverse-transcription polymerase chain reaction (RT-PCR), novel quantitative RT-PCR primers/probe were developed, and whole genome sequencing was performed. RESULTS: Seventeen people had SEOV IgM, indicating recent infection; 7 reported symptoms and 3 were hospitalized. All patients recovered. Thirty-one facilities in 11 US states had SEOV infection, and among those with ≥10 rats tested, rat IgG prevalence ranged 2%-70% and SEOV RT-PCR positivity ranged 0%-70%. Human laboratory-confirmed cases were significantly associated with rat IgG positivity and RT-PCR positivity (P = .03 and P = .006, respectively). Genomic sequencing identified >99.5% homology between SEOV sequences in this outbreak, and these were >99% identical to SEOV associated with previous pet rat infections in England, the Netherlands, and France. Frequent trade of rats between home-based ratteries contributed to transmission of SEOV between facilities. CONCLUSIONS: Pet rat owners, breeders, and the healthcare and public health community should be aware and take steps to prevent SEOV transmission in pet rats and to humans. Biosecurity measures and diagnostic testing can prevent further infections.
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Brotes de Enfermedades , Fiebre Hemorrágica con Síndrome Renal/transmisión , Enfermedades de los Roedores/transmisión , Virus Seoul/aislamiento & purificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Animales , Cruzamiento , Niño , Preescolar , Técnicas de Laboratorio Clínico/veterinaria , Brotes de Enfermedades/veterinaria , Genoma Viral/genética , Fiebre Hemorrágica con Síndrome Renal/diagnóstico , Fiebre Hemorrágica con Síndrome Renal/epidemiología , Humanos , Inmunoglobulina G/sangre , Inmunoglobulina M/sangre , Lactante , Persona de Mediana Edad , Mascotas/virología , Filogenia , Prevalencia , ARN Viral/genética , Ratas , Enfermedades de los Roedores/diagnóstico , Enfermedades de los Roedores/epidemiología , Virus Seoul/clasificación , Virus Seoul/genética , Virus Seoul/inmunología , Estados Unidos/epidemiología , Zoonosis Virales/diagnóstico , Zoonosis Virales/epidemiología , Zoonosis Virales/transmisión , Adulto JovenRESUMEN
We report a case of infection with New York orthohantavirus in a woman who showed renal impairment and hemorrhage, complicated by hydrocephalus, in Long Island, New York, USA. Phylogenetic analysis showed that this virus was genetically similar to a New York orthohantavirus isolated in the same region during 1993.
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Infecciones por Hantavirus/diagnóstico , Infecciones por Hantavirus/virología , Hidrocefalia/diagnóstico , Orthohantavirus , Insuficiencia Respiratoria/diagnóstico , Biomarcadores , Femenino , Orthohantavirus/clasificación , Orthohantavirus/genética , Orthohantavirus/inmunología , Orthohantavirus/aislamiento & purificación , Infecciones por Hantavirus/complicaciones , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Hidrocefalia/etiología , Hemorragias Intracraneales/diagnóstico , Hemorragias Intracraneales/etiología , Persona de Mediana Edad , ARN Viral , Insuficiencia Respiratoria/etiología , Pruebas Serológicas , Evaluación de SíntomasRESUMEN
We describe a strain of Lassa virus representing a putative new lineage that was isolated from a cluster of human infections with an epidemiologic link to Togo. This finding extends the known range of Lassa virus to Togo.
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Fiebre de Lassa/epidemiología , Fiebre de Lassa/virología , Virus Lassa/clasificación , Animales , Chlorocebus aethiops , Genes Virales , Historia del Siglo XXI , Humanos , Fiebre de Lassa/historia , Filogenia , Togo/epidemiología , Células VeroRESUMEN
Two patients with Lassa fever are described who are the first human cases treated with a combination of ribavirin and favipiravir. Both patients survived but developed transaminitis and had prolonged detectable virus RNA in blood and semen, suggesting that the possibility of sexual transmission of Lassa virus should be considered.
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Amidas/uso terapéutico , Antivirales/uso terapéutico , Fiebre de Lassa , Pirazinas/uso terapéutico , Ribavirina/uso terapéutico , Adulto , Humanos , Fiebre de Lassa/tratamiento farmacológico , Fiebre de Lassa/fisiopatología , Fiebre de Lassa/virología , Virus Lassa/genética , Masculino , Reacción en Cadena de la Polimerasa , ARN Viral/análisis , ARN Viral/genética , TogoRESUMEN
Despite careful donor screening, unexpected donor-derived infections continue to occur in organ transplant recipients (OTRs). Lymphocytic choriomeningitis virus (LCMV) is one such transplant-transmitted infection that in previous reports has resulted in a high mortality among the affected OTRs. We report a LCMV case cluster that occurred 3 weeks post-transplant in three OTRs who received allografts from a common organ donor in March 2013. Following confirmation of LCMV infection at Centers for Disease Control and Prevention, immunosuppression was promptly reduced and ribavirin and/or intravenous immunoglobulin therapy were initiated in OTRs. The liver recipient died, but right kidney recipients survived without significant sequelae and left kidney recipient survived acute LCMV infection with residual mental status deficit. Our series highlights how early recognition led to prompt therapeutic intervention, which may have contributed to more favorable outcome in the kidney transplant recipients.
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Trasplante de Riñón/efectos adversos , Trasplante de Hígado/efectos adversos , Coriomeningitis Linfocítica/diagnóstico , Virus de la Coriomeningitis Linfocítica/aislamiento & purificación , Anciano , Selección de Donante , Intervención Médica Temprana , Resultado Fatal , Femenino , Humanos , Terapia de Inmunosupresión , Riñón/patología , Riñón/virología , Hígado/patología , Hígado/virología , Coriomeningitis Linfocítica/etiología , Coriomeningitis Linfocítica/patología , Virus de la Coriomeningitis Linfocítica/genética , Masculino , Persona de Mediana Edad , Donantes de Tejidos , Receptores de Trasplantes , Trasplante HomólogoRESUMEN
Justice-involved HIV-positive women, particularly those in the U.S. South, are a hidden, understudied population. Little work has explored their psychosocial histories in relation to their HIV risk. We conducted a content analysis of their life history narratives from childhood to present, via in-depth interviews with 24 such women in 2 Alabama cities. Findings included the following: (a) In childhood/adolescence, consistent HIV risk factors were present, beginning with early sexual abuse and induction into alcohol/substance use; (b) By early adulthood, HIV and incarceration risks were compounded in social settings, through cyclical substance use, revictimization, and reoffending;
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Adultos Sobrevivientes del Maltrato a los Niños , Infecciones por VIH , Prisioneros , Alabama , Relaciones Familiares , Femenino , Humanos , Entrevistas como Asunto , Salud de la MujerRESUMEN
BACKGROUND: Several patients with Ebola virus disease (EVD) managed in the United States have received ZMapp monoclonal antibodies, TKM-Ebola small interfering RNA, brincidofovir, and/or convalescent plasma as investigational therapeutics. METHODS: To investigate whether treatment selected for Ebola virus (EBOV) mutations conferring resistance, viral sequencing was performed on RNA extracted from clinical blood specimens from patients with EVD following treatment, and putative viral targets were analyzed. RESULTS: We observed no major or minor EBOV mutations within regions targeted by therapeutics. CONCLUSIONS: This small subset of patients and clinical specimens suggests that evolution of resistance is not a direct consequence of antiviral treatment. As EVD antiviral treatments are introduced into wider use, it is essential that continuous viral full-genome surveillance is performed, to monitor for the emergence of escape mutations.
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Anticuerpos Monoclonales/uso terapéutico , Antivirales/uso terapéutico , Ebolavirus/efectos de los fármacos , Genoma Viral/genética , Fiebre Hemorrágica Ebola/tratamiento farmacológico , ARN Interferente Pequeño/uso terapéutico , Convalecencia , Farmacorresistencia Viral , Ebolavirus/genética , Ebolavirus/inmunología , Evolución Molecular , Fiebre Hemorrágica Ebola/inmunología , Fiebre Hemorrágica Ebola/virología , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Epidemiología Molecular , Mutación , Plasma , Análisis de Secuencia de ADNRESUMEN
During the Ebola virus outbreak of 2013-2016, the Viral Special Pathogens Branch field laboratory in Sierra Leone tested approximately 26 000 specimens between August 2014 and October 2015. Analysis of the B2M endogenous control Ct values showed its utility in monitoring specimen quality, comparing results with different specimen types, and interpretation of results. For live patients, blood is the most sensitive specimen type and oral swabs have little diagnostic utility. However, swabs are highly sensitive for diagnostic testing of corpses.
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Brotes de Enfermedades , Ebolavirus/aislamiento & purificación , Fiebre Hemorrágica Ebola/diagnóstico , ARN Viral/análisis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa/métodos , Servicios de Laboratorio Clínico , Ebolavirus/genética , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/virología , Humanos , Laboratorios , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Sensibilidad y Especificidad , Sierra Leona/epidemiologíaRESUMEN
We investigated the duration of Ebola virus (EBOV) RNA and infectious EBOV in semen specimens of 5 Ebola virus disease (EVD) survivors. EBOV RNA and infectious EBOV was detected by real-time RT-PCR and virus culture out to 290 days and 70 days, respectively, after EVD onset.
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Ebolavirus/aislamiento & purificación , Fiebre Hemorrágica Ebola/virología , Semen/virología , Adulto , Estudios de Cohortes , Ebolavirus/patogenicidad , Humanos , Masculino , SobrevivientesRESUMEN
AIMS: Treatment strategies for breast cancer continue to evolve. No uniformity exists in the UK for the management of node-positive breast cancer patients. Most centres continue to use conventional histopathology of sampled sentinel lymph nodes (SLNs), which requires delayed axillary clearance in up to 25% of patients. Some use touch imprint cytology or frozen section for intraoperative testing, although both have inherent sensitivity issues. An intraoperative molecular diagnostic approach helps to overcome some of these limitations. The aim of this study was to assess the clinical effectiveness of Metasin, a molecular method for the intraoperative evaluation of SLNs. METHODS AND RESULTS: RNA from 3296 lymph nodes from 1836 patients undergoing SLN assessment was analysed with Metasin. Alternate slices of tissue were examined in parallel by histology. Cases deemed to be discordant were analysed by protein gel electrophoresis. There was concordance between Metasin and histology in 94.1% of cases, with a sensitivity of 92% [95% confidence interval (CI) 88-94%] and a specificity of 97% (95% CI 95-97%). Positive and negative predictive values were 88% and 98%, respectively. Over half of the discordant cases (4.4%) were ascribed to tissue allocation bias (TAB). CONCLUSIONS: Clinical validation of the Metasin assay suggests that it is sufficiently sensitive and specific to make it fit for purpose in the intraoperative setting.
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Biomarcadores de Tumor/análisis , Neoplasias de la Mama/patología , Metástasis Linfática/diagnóstico , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Ganglio Linfático Centinela/patología , Femenino , Humanos , Periodo Intraoperatorio , Biopsia del Ganglio Linfático Centinela/métodosRESUMEN
The primary purpose of this study is to introduce the Youth Assessment and Screening Instrument (YASI; Orbis Partners, 2000), which is a comprehensive assessment protocol gauging a range of risks, needs, and strengths associated with criminal conduct in juvenile populations. Applied to a sample of 464 juvenile offenders bound by community supervision in Alberta, Canada, the Pre-Screen version of the instrument achieved a high level of accuracy in predicting both general and violent offenses over an 18-month follow-up period (Area Under the Curve [AUC] = .79). No significant differences in overall predictive validity were found across demographic groups, save for the relatively lower level of accuracy achieved in predicting general reoffending across the subsample of girls (AUC = .68). With regard to strengths, a buffering effect was identified whereby high-risk cases with higher levels of strength had superior outcomes compared to their lower strength counterparts. Results suggest that it is advisable to consider the quantitative inclusion of strength-based items in the assessment of juvenile risk.
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Delincuencia Juvenil , Medición de Riesgo/métodos , Adolescente , Niño , Femenino , Humanos , Masculino , Estudios Prospectivos , Psicometría , Recurrencia , Reproducibilidad de los Resultados , Adulto JovenRESUMEN
This study examines treatment typologies over time and their relationship to reoffending outcomes. Latent transition analysis was conducted with 6,675 men on community supervision in Alberta, Canada using risk and strength factors measured by the Service Planning Instrument (Orbis Partners, 2003). Three timepoints were assessed: Time 1 = first assessment within 90 days of start of supervision, Time 2 = 3 to 8 months post initial assessment, and Time 3 = 9 to 14 months post initial assessment. Five profiles consistently emerged: Low risk/Low strength profile, Aggressive, complex need/Low strength profile, Moderate risk/Moderate strength profile, Low risk/High strength profile, and Non-aggressive, complex need/Low strength profile. At Time 3, a sixth profile emerged labeled Moderate complex need/Low strength. Profiles characterized as aggressive and those with complex needs had highest rates of reoffending. Results demonstrate the utility of incorporating strengths, mental health needs, and adverse childhood experiences in risk assessment protocols.
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Salud Mental , Masculino , Humanos , Factores de Riesgo , Medición de Riesgo , CanadáRESUMEN
This is the protocol for a Campbell systematic review. The objective of this review is to synthesize the evidence to identify risk and strength factors that predict the criminal offending in underrepresented genders and sexual minorities.