Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 61
Filtrar
Más filtros

País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
N Engl J Med ; 384(13): 1240-1247, 2021 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-33789012

RESUMEN

During the 2018-2020 Ebola virus disease (EVD) outbreak in North Kivu province in the Democratic Republic of Congo, EVD was diagnosed in a patient who had received the recombinant vesicular stomatitis virus-based vaccine expressing a ZEBOV glycoprotein (rVSV-ZEBOV) (Merck). His treatment included an Ebola virus (EBOV)-specific monoclonal antibody (mAb114), and he recovered within 14 days. However, 6 months later, he presented again with severe EVD-like illness and EBOV viremia, and he died. We initiated epidemiologic and genomic investigations that showed that the patient had had a relapse of acute EVD that led to a transmission chain resulting in 91 cases across six health zones over 4 months. (Funded by the Bill and Melinda Gates Foundation and others.).


Asunto(s)
Ebolavirus/genética , Fiebre Hemorrágica Ebola/transmisión , Adulto , Teorema de Bayes , República Democrática del Congo/epidemiología , Vacunas contra el Virus del Ébola/inmunología , Ebolavirus/aislamiento & purificación , Resultado Fatal , Genoma Viral , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/terapia , Humanos , Masculino , Mutación , Filogenia , ARN Viral/sangre , Recurrencia
2.
Genet Sel Evol ; 54(1): 58, 2022 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-36057548

RESUMEN

BACKGROUND: In cattle, genome-wide association studies (GWAS) have largely focused on European or Asian breeds, using genotyping arrays that were primarily designed for European cattle. Because there is growing interest in performing GWAS in African breeds, we have assessed the performance of 23 commercial bovine genotyping arrays for capturing the diversity across African breeds and performing imputation. We used 409 whole-genome sequences (WGS) spanning global cattle breeds, and a real cohort of 2481 individuals (including African breeds) that were genotyped with the Illumina high-density (HD) array and the GeneSeek bovine 50 k array. RESULTS: We found that commercially available arrays were not effective in capturing variants that segregate among African indicine animals. Only 6% of these variants in high linkage disequilibrium (LD) (r2 > 0.8) were on the best performing arrays, which contrasts with the 17% and 25% in African and European taurine cattle, respectively. However, imputation from available HD arrays can successfully capture most variants (accuracies up to 0.93), mainly when using a global, not continent-specific, reference panel, which partially reflects the unusually high levels of admixture on the continent. When considering functional variants, the GGPF250 array performed best for tagging WGS variants and imputation. Finally, we show that imputation from low-density arrays can perform almost as well as HD arrays, if a two-stage imputation approach is adopted, i.e. first imputing to HD and then to WGS, which can potentially reduce the costs of GWAS. CONCLUSIONS: Our results show that the choice of an array should be based on a balance between the objective of the study and the breed/population considered, with the HD and BOS1 arrays being the best choice for both taurine and indicine breeds when performing GWAS, and the GGPF250 being preferable for fine-mapping studies. Moreover, our results suggest that there is no advantage to using the indicus-specific arrays for indicus breeds, regardless of the objective. Finally, we show that using a reference panel that better represents global bovine diversity improves imputation accuracy, particularly for non-European taurine populations.


Asunto(s)
Estudio de Asociación del Genoma Completo , Polimorfismo de Nucleótido Simple , Animales , Bovinos/genética , Genotipo , Desequilibrio de Ligamiento
3.
Hum Resour Health ; 20(1): 40, 2022 05 12.
Artículo en Inglés | MEDLINE | ID: mdl-35549712

RESUMEN

BACKGROUND: The 2014-2016 Ebola virus disease outbreak in West Africa revealed weaknesses in the health systems of the three most heavily affected countries, including a shortage of public health professionals at the local level trained in surveillance and outbreak investigation. In response, the Frontline Field Epidemiology Training Program (FETP) was created by CDC in 2015 as a 3-month, accelerated training program in field epidemiology that specifically targets the district level. In Guinea, the first two FETP-Frontline cohorts were held from January to May, and from June to September 2017. Here, we report the results of a cross-sectional evaluation of these first two cohorts of FETP-Frontline in Guinea. METHODS: The evaluation was conducted in April 2018 and consisted of interviews with graduates, their supervisors, and directors of nearby health facilities, as well as direct observation of data reports and surveillance tools at health facilities. Interviews and site visits were conducted using standardized questionnaires and checklists. Qualitative data were coded under common themes and analyzed using descriptive statistics. RESULTS: The evaluation revealed a significant perception of improvement in all assessed skills by the graduates, as well as high levels of self-reported involvement in key activities related to data collection, analysis, and reporting. Supervisors highlighted improvements to systematic and quality case and summary reporting as key benefits of the FETP-Frontline program. At the health facility level, staff reported the training had resulted in improvements to information sharing and case notifications. Reported barriers included lack of transportation, available support personnel, and other resources. Graduates and supervisors both emphasized the importance of continued and additional training to solidify and retain skills. CONCLUSIONS: The evaluation demonstrated a strongly positive perceived benefit of the FETP-Frontline training on the professional activities of graduates as well as the overall surveillance system. However, efforts are needed to ensure greater gender equity and to recruit more junior trainee candidates for future cohorts. Moreover, although improvements to the surveillance system were observed concurrent with the completion of the two cohorts, the evaluation was not designed to directly measure impact on surveillance or response functions. Combined with the rapid implementation of FETP-Frontline around the world, this suggests an opportunity to develop standardized evaluation toolkits, which could incorporate metrics that would directly assess the impact of equitable field epidemiology workforce development on countries' abilities to prevent, detect, and respond to public health threats.


Asunto(s)
Epidemiología , Salud Pública , Estudios Transversales , Brotes de Enfermedades/prevención & control , Epidemiología/educación , Guinea , Humanos , Evaluación de Programas y Proyectos de Salud , Salud Pública/educación , Recursos Humanos
4.
Emerg Infect Dis ; 27(12): 2988-2998, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34808084

RESUMEN

The 10th and largest Ebola virus disease epidemic in the Democratic Republic of the Congo (DRC) was declared in North Kivu Province in August 2018 and ended in June 2020. We describe and evaluate an Early Warning, Alert and Response System (EWARS) implemented in the Beni health zone of DRC during August 5, 2018-June 30, 2020. During this period, 194,768 alerts were received, of which 30,728 (15.8%) were validated as suspected cases. From these, 801 confirmed and 3 probable cases were detected. EWARS showed an overall good performance: sensitivity and specificity >80%, nearly all (97%) of alerts investigated within 2 hours of notification, and good demographic representativeness. The average cost of the system was US $438/case detected and US $1.8/alert received. The system was stable, despite occasional disruptions caused by political insecurity. Our results demonstrate that EWARS was a cost-effective component of the Ebola surveillance strategy in this setting.


Asunto(s)
Epidemias , Fiebre Hemorrágica Ebola , República Democrática del Congo/epidemiología , Brotes de Enfermedades , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/epidemiología , Humanos
5.
Emerg Infect Dis ; 26(2): 206-211, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31961292

RESUMEN

At the end of the 2013-2016 Ebola virus disease outbreak in Guinea, we implemented an alert system for early detection of Ebola resurgence among survivors. Survivors were asked to report health alerts in their household and provide body fluid specimens for laboratory testing. During April-September 2016, a total of 1,075 (88%) of 1,215 survivors participated in the system; follow up occurred at a median of 16 months after discharge (interquartile range 14-18 months). Of these, 784 acted as focal points and reported 1,136 alerts (including 4 deaths among survivors). A total of 372 (91%) of 408 eligible survivors had >1 semen specimen tested; of 817 semen specimens, 5 samples from 4 survivors were positive up to 512 days after discharge. No lochia (0/7) or breast milk (0/69) specimens tested positive. Our findings underscore the importance of long-term monitoring of survivors' semen samples in an Ebola-affected country.


Asunto(s)
Ebolavirus/aislamiento & purificación , Fiebre Hemorrágica Ebola/epidemiología , Adolescente , Adulto , Líquidos Corporales/virología , Niño , Preescolar , Brotes de Enfermedades/prevención & control , Composición Familiar , Femenino , Guinea/epidemiología , Fiebre Hemorrágica Ebola/prevención & control , Fiebre Hemorrágica Ebola/virología , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Salud Pública , Recurrencia , Semen/virología , Sobrevivientes , Adulto Joven
6.
Lancet ; 394(10210): 1750-1763, 2019 11 09.
Artículo en Inglés | MEDLINE | ID: mdl-31604660

RESUMEN

BACKGROUND: Women across the world are mistreated during childbirth. We aimed to develop and implement evidence-informed, validated tools to measure mistreatment during childbirth, and report results from a cross-sectional study in four low-income and middle-income countries. METHODS: We prospectively recruited women aged at least 15 years in twelve health facilities (three per country) in Ghana, Guinea, Myanmar, and Nigeria between Sept 19, 2016, and Jan 18, 2018. Continuous observations of labour and childbirth were done from admission up to 2 h post partum. Surveys were administered by interviewers in the community to women up to 8 weeks post partum. Labour observations were not done in Myanmar. Data were collected on sociodemographics, obstetric history, and experiences of mistreatment. FINDINGS: 2016 labour observations and 2672 surveys were done. 838 (41·6%) of 2016 observed women and 945 (35·4%) of 2672 surveyed women experienced physical or verbal abuse, or stigma or discrimination. Physical and verbal abuse peaked 30 min before birth until 15 min after birth (observation). Many women did not consent for episiotomy (observation: 190 [75·1%] of 253; survey: 295 [56·1%] of 526) or caesarean section (observation: 35 [13·4%] of 261; survey: 52 [10·8%] of 483), despite receiving these procedures. 133 (5·0%) of 2672 women or their babies were detained in the facility because they were unable to pay the bill (survey). Younger age (15-19 years) and lack of education were the primary determinants of mistreatment (survey). For example, younger women with no education (odds ratio [OR] 3·6, 95% CI 1·6-8·0) and younger women with some education (OR 1·6, 1·1-2·3) were more likely to experience verbal abuse, compared with older women (≥30 years), adjusting for marital status and parity. INTERPRETATION: More than a third of women experienced mistreatment and were particularly vulnerable around the time of birth. Women who were younger and less educated were most at risk, suggesting inequalities in how women are treated during childbirth. Understanding drivers and structural dimensions of mistreatment, including gender and social inequalities, is essential to ensure that interventions adequately account for the broader context. FUNDING: United States Agency for International Development and the UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, WHO.


Asunto(s)
Trabajo de Parto/psicología , Parto/psicología , Violencia/estadística & datos numéricos , Adolescente , Adulto , Estudios Transversales , Femenino , Ghana , Guinea , Accesibilidad a los Servicios de Salud , Humanos , Mianmar , Nigeria , Embarazo , Estudios Prospectivos , Estigma Social , Factores Socioeconómicos , Encuestas y Cuestionarios , Adulto Joven
7.
BMC Infect Dis ; 20(1): 315, 2020 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-32345228

RESUMEN

BACKGROUND: Despite the predictive role of body weight variation in treatment outcome in multidrug-resistant tuberculosis (MDR-TB), few corroborating data are available. We studied weight variation in patients with MDR-TB to identify groups of weight change and to determine factors that influence these changes. METHODS: We analyzed patients with rifampicin resistance who were treated with an MDR-TB treatment regimen between June 07, 2016 and June 22, 2018 at three major drug-resistant TB centers in Guinea. Patients were seen monthly until the end of treatment. Clinical outcome was the body mass index (BMI). We used a linear mixed model to analyze trajectories of BMI and a latent class mixed model to identify groups of BMI trajectories. RESULTS: Of 232 patients treated for MDR-TB during the study period, 165 were analyzed. These patients had a total of 1387 visits, with a median of 5 visits (interquartile range, 3-8 visits). Monthly BMI increase was 0.24 (SE 0.02) per kg/m2. Factors associated with faster BMI progression were success of MDR-TB treatment (0.24 [SE 0.09] per kg/m2; p = 0.0205) and absence of lung cavities on X-ray (0.18 [0.06] per kg/m2; p = 0.0068). Two groups of BMI change were identified: rapid BMI increase (n = 121; 85%) and slow BMI increase (n = 22; 15%). Patients in the slow BMI increase group were mostly female (68%) had no history of TB treatment (41%), had a positive HIV infection (59%), and had a more severe clinical condition at baseline, characterized by a higher frequency of symptoms including depression (18%), dyspnea (68%), poor adherence to MDR-TB treatment (64%), lower platelet count, and higher SGOT. These patients also had a longer time to initial culture conversion (log-rank test: p = 0.0218). CONCLUSION: Quantitative BMI data on patients with MDR-TB treated with a short regimen allowed the identification of subgroups of patients with different trajectories of BMI and emphasized the usefulness of BMI as a biomarker for the monitoring of MDR-TB treatment outcome.


Asunto(s)
Antibióticos Antituberculosos/uso terapéutico , Índice de Masa Corporal , Rifampin/uso terapéutico , Tuberculosis Resistente a Múltiples Medicamentos/tratamiento farmacológico , Adulto , Estudios de Cohortes , Depresión/etiología , Disnea/etiología , Femenino , Infecciones por VIH/complicaciones , Infecciones por VIH/diagnóstico , Humanos , Masculino , Cumplimiento de la Medicación , Persona de Mediana Edad , Estudios Retrospectivos , Tuberculosis Resistente a Múltiples Medicamentos/complicaciones , Tuberculosis Resistente a Múltiples Medicamentos/diagnóstico , Adulto Joven
8.
BMC Public Health ; 20(1): 1200, 2020 Aug 04.
Artículo en Inglés | MEDLINE | ID: mdl-32753044

RESUMEN

BACKGROUND: Most countries in Subsaharan Africa have well-established National Tuberculosis Control Programs with relatively stable routine performances. However, major epidemiological events may result in significant disruptions. In March 2014, the World Health Organization announced the outbreak of Ebola virus disease in Guinea, a country with a high incidence of TB and HIV. Our study aimed to assess the impact of the Ebola virus disease outbreak on TB notification, treatment, and surveillance, using main indicators. METHODS: This is a retrospective cohort study that compared TB trends using surveillance data from the periods before (2011-2013), during (2014-2016), and after (2017-2018) Ebola virus disease outbreak. A time-series analysis was conducted to investigate the linkages between the decline in TB notification and the Ebola virus disease outbreak through cross-correlation. The lag in the cross-correlation test was evaluated using ANCOVA type II delayed variable dependent model. The surveillance system was assessed using TB surveillance standards and benchmarks and vital registration systems recommended by WHO, compared with those of 2015 during the Ebola virus disease. RESULTS: The rate of reporting of TB declined from 120 cases per 100,000 in 2011 to 100 cases per 100,000 in 2014, at the peak of the Ebola virus disease outbreak. The time-series cross-correlation test of all notified cases of TB and Ebola showed a significant lag of - 0.4 (40%), reflecting a drop in the rate of notification (F-value = 5.7 [95% CI: 0.2-21.3]). The Ebola virus disease had no negative impact on patient treatment outcomes (F-value = 1.3 [95% CI: 0.0-8.8]). Regarding the surveillance system, five out of 13 WHO standards and benchmarks were met following their evaluation in 2019, after the Ebola virus disease outbreak, compared to three in 2015. CONCLUSION: Major epidemics such as the Ebola virus disease outbreak may have a significant impact on well-established TB control programs as shown in the example of Guinea. Sudden disruptions of routine performance may lead programs to improve their surveillance system. The experience acquired in the fight against EVD and the investments made should make it possible to prepare the health system in a coherent manner for the other probable episodes.


Asunto(s)
Fiebre Hemorrágica Ebola , Vigilancia de la Población , Tuberculosis , Atención a la Salud , Brotes de Enfermedades , Epidemias , Guinea/epidemiología , Fiebre Hemorrágica Ebola/epidemiología , Humanos , Estudios Retrospectivos , Tuberculosis/diagnóstico , Tuberculosis/epidemiología , Organización Mundial de la Salud
9.
Euro Surveill ; 25(2)2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31964460

RESUMEN

The ongoing Ebola outbreak in the eastern Democratic Republic of the Congo is facing unprecedented levels of insecurity and violence. We evaluate the likely impact in terms of added transmissibility and cases of major security incidents in the Butembo coordination hub. We also show that despite this additional burden, an adapted response strategy involving enlarged ring vaccination around clusters of cases and enhanced community engagement managed to bring this main hotspot under control.


Asunto(s)
Brotes de Enfermedades/prevención & control , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/prevención & control , República Democrática del Congo/epidemiología , Ebolavirus/genética , Ebolavirus/aislamiento & purificación , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/transmisión , Humanos , Práctica de Salud Pública/economía , Cobertura de Vacunación
10.
Am J Epidemiol ; 188(7): 1319-1327, 2019 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-30941398

RESUMEN

Understanding risk factors for Ebola transmission is key for effective prediction and design of interventions. We used data on 860 cases in 129 chains of transmission from the latter half of the 2013-2016 Ebola epidemic in Guinea. Using negative binomial regression, we determined characteristics associated with the number of secondary cases resulting from each infected individual. We found that attending an Ebola treatment unit was associated with a 38% decrease in secondary cases (incidence rate ratio (IRR) = 0.62, 95% confidence interval (CI): 0.38, 0.99) among individuals that did not survive. Unsafe burial was associated with a higher number of secondary cases (IRR = 1.82, 95% CI: 1.10, 3.02). The average number of secondary cases was higher for the first generation of a transmission chain (mean = 1.77) compared with subsequent generations (mean = 0.70). Children were least likely to transmit (IRR = 0.35, 95% CI: 0.21, 0.57) compared with adults, whereas older adults were associated with higher numbers of secondary cases. Men were less likely to transmit than women (IRR = 0.71, 95% CI: 0.55, 0.93). This detailed surveillance data set provided an invaluable insight into transmission routes and risks. Our analysis highlights the key role that age, receiving treatment, and safe burial played in the spread of EVD.


Asunto(s)
Fiebre Hemorrágica Ebola/transmisión , Factores de Edad , Atención Ambulatoria/estadística & datos numéricos , Brotes de Enfermedades , Femenino , Ritos Fúnebres , Guinea/epidemiología , Fiebre Hemorrágica Ebola/epidemiología , Humanos , Incidencia , Masculino , Factores de Riesgo , Factores Sexuales
11.
BMC Infect Dis ; 19(1): 981, 2019 Nov 21.
Artículo en Inglés | MEDLINE | ID: mdl-31752717

RESUMEN

BACKGROUND: The ninth outbreak of Ebola Virus Disease (EVD) in the Democratic Republic of the Congo occurred in Équateur Province from 8 May-24 July 2018. A system of health facility (HF)-based active case finding (ACF) was implemented in Mbandaka, a regional capital with four confirmed EVD cases, following completion of contact tracing. The goal of this HF-based ACF system was to look for undetected EVD cases among patients that visited HFs beginning one week prior to the system's implementation. METHODS: From 23 June - 24 July 2018, ACF teams visited HFs in Mbandaka and reviewed all medical records as far back as 17 June for any consultations meeting the suspected EVD case definition. The teams then assessed whether to validate these as suspected EVD cases based on factors such as recovery, epidemiological links, and their clinical judgement. ACF teams also assessed HFs' awareness of EVD symptoms and the process for alerting suspected cases. We calculated descriptive statistics regarding the characteristics of reviewed consultations, alert cases, and visited HFs. We also used univariate and multivariate random effects logistic regression models to evaluate the impact of repeated ACF visits to the same HF on the staff's awareness of EVD. RESULTS: ACF teams reviewed 37,746 consultations, of which 690 met the definition of a suspected case of EVD. Two were validated as suspected EVD cases and transferred to the Ebola Treatment Unit for testing; both tested negative. Repeated ACF visits to the same HF were significantly associated with improved EVD awareness (p < 0.001) in univariate and multivariate analyses. CONCLUSION: HF-based ACF during EVD outbreaks may improve EVD awareness and reveal many individuals meeting the suspected case definition. However, many who meet this definition may not have EVD, depending on the population size covered by ACF and amount of ongoing EVD transmission. Given the burdensome procedure of testing suspected EVD cases, future HF-based ACF systems would benefit from improved clarity on which patients require further testing.


Asunto(s)
Notificación de Enfermedades/métodos , Fiebre Hemorrágica Ebola/virología , República Democrática del Congo/epidemiología , Brotes de Enfermedades , Ebolavirus/genética , Ebolavirus/aislamiento & purificación , Ebolavirus/fisiología , Femenino , Instituciones de Salud/estadística & datos numéricos , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/epidemiología , Humanos , Modelos Logísticos , Masculino
12.
J Infect Dis ; 218(suppl_5): S287-S291, 2018 11 22.
Artículo en Inglés | MEDLINE | ID: mdl-29920602

RESUMEN

The 2014-2016 Ebola virus (EBOV) disease outbreak affected over 29000 people and left behind the biggest cohort (over 17000 individuals) of Ebola survivors in history. Although the persistence of EBOV in body fluids of survivors was reported before the recent outbreak, new evidence revealed that the virus can be detected up to 18 months in the semen, which represents the biggest risk of Ebola resurgence in affected communities. In this study, we review the knowledge on the Ebola flare-ups that occurred after the peak of the 2014-2016 Ebola epidemic in West Africa.


Asunto(s)
Ebolavirus/patogenicidad , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/transmisión , África Occidental/epidemiología , Líquidos Corporales/virología , Brotes de Enfermedades , Epidemias , Fiebre Hemorrágica Ebola/virología , Humanos , Semen/virología , Sobrevivientes
13.
BMC Med Res Methodol ; 18(1): 132, 2018 11 15.
Artículo en Inglés | MEDLINE | ID: mdl-30442102

RESUMEN

BACKGROUND: Efforts to improve maternal health are increasingly focused on improving the quality of care provided to women at health facilities, including the promotion of respectful care and eliminating mistreatment of women during childbirth. A WHO-led multi-country research project aims to develop and validate two tools (labor observation and community survey) to measure how women are treated during facility-based childbirth. This paper describes the development process for these measurement tools, and how they were implemented in a multi-country study (Ghana, Guinea, Myanmar and Nigeria). METHODS: An iterative mixed-methods approach was used to develop two measurement tools. Methodological development was conducted in four steps: (1) initial tool development; (2) validity testing, item adjustment and piloting of paper-based tools; (3) conversion to digital, tablet-based tools; and (4) data collection and analysis. These steps included systematic reviews, primary qualitative research, mapping of existing tools, item consolidation, peer review by key stakeholders and piloting. RESULTS: The development, structure, administration format, and implementation of the labor observation and community survey tools are described. For the labor observations, a total of 2016 women participated: 408 in Nigeria, 682 in Guinea, and 926 in Ghana. For the community survey, a total of 2672 women participated: 561 in Nigeria, 644 in Guinea, 836 in Ghana, and 631 in Myanmar. Of the 2016 women who participated in the labor observations, 1536 women (76.2%) also participated in the community survey and have linked data: 779 in Ghana, 425 in Guinea, and 332 in Nigeria. CONCLUSIONS: An important step to improve the quality of maternity care is to understand the magnitude and burden of mistreatment across contexts. Researchers and healthcare providers in maternal health are encouraged to use and implement these tools, to inform the development of more women-centered, respectful maternity healthcare services. By measuring the prevalence of mistreatment of women during childbirth, we will be able to design and implement programs and policies to transform maternity services.


Asunto(s)
Parto Obstétrico/métodos , Servicios de Salud Materna/estadística & datos numéricos , Parto , Calidad de la Atención de Salud/estadística & datos numéricos , Adulto , Femenino , Ghana , Guinea , Personal de Salud/normas , Personal de Salud/estadística & datos numéricos , Accesibilidad a los Servicios de Salud/normas , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Humanos , Servicios de Salud Materna/normas , Mianmar , Nigeria , Embarazo , Calidad de la Atención de Salud/normas , Encuestas y Cuestionarios
14.
Euro Surveill ; 23(12)2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29589579

RESUMEN

On 11 May 2015, the Dubréka prefecture, Guinea, reported nine laboratory-confirmed cases of Ebola virus disease (EVD). None could be epidemiologically linked to cases previously reported in the prefecture. We describe the epidemiological and molecular investigations of this event. We used the Dubréka EVD registers and the Ebola treatment centre's (ETC) records to characterise chains of transmission. Real-time field Ebola virus sequencing was employed to support epidemiological results. An epidemiological cluster of 32 cases was found, of which 27 were laboratory confirmed, 24 were isolated and 20 died. Real-time viral sequencing on 12 cases demonstrated SL3 lineage viruses with sequences differing by one to three nt inside a single phylogenetic cluster. For isolated cases, the average time between symptom onset and ETC referral was 2.8 days (interquartile range (IQR): 1-4). The average time between sample collection and molecular results' availability was 3 days (IQR: 2-5). In an area with scarce resources, the genetic characterisation supported the outbreak investigations in real time, linking cases where epidemiological investigation was limited and reassuring that the responsible strain was already circulating in Guinea. We recommend coupling thorough epidemiological and genomic investigations to control EVD clusters.


Asunto(s)
ADN Viral/genética , Ebolavirus/genética , Ebolavirus/aislamiento & purificación , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/transmisión , Trazado de Contacto , Brotes de Enfermedades/prevención & control , Genómica , Guinea/epidemiología , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/virología , Humanos , Filogenia , Reacción en Cadena en Tiempo Real de la Polimerasa
15.
J Infect Dis ; 215(12): 1799-1806, 2017 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-28520958

RESUMEN

Background: The international impact, rapid widespread transmission, and reporting delays during the 2014 Ebola outbreak in West Africa highlighted the need for a global, centralized database to inform outbreak response. The World Health Organization and Emerging and Dangerous Pathogens Laboratory Network addressed this need by supporting the development of a global laboratory database. Methods: Specimens were collected in the affected countries from patients and dead bodies meeting the case definitions for Ebola virus disease. Test results were entered in nationally standardized spreadsheets and consolidated onto a central server. Results: From March 2014 through August 2016, 256343 specimens tested for Ebola virus disease were captured in the database. Thirty-one specimen types were collected, and a variety of diagnostic tests were performed. Regular analysis of data described the functionality of laboratory and response systems, positivity rates, and the geographic distribution of specimens. Conclusion: With data standardization and end user buy-in, the collection and analysis of large amounts of data with multiple stakeholders and collaborators across various user-access levels was made possible and contributed to outbreak response needs. The usefulness and value of a multifunctional global laboratory database is far reaching, with uses including virtual biobanking, disease forecasting, and adaption to other disease outbreaks.


Asunto(s)
Bancos de Muestras Biológicas/normas , Bases de Datos Factuales/normas , Brotes de Enfermedades/estadística & datos numéricos , Ebolavirus/fisiología , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/virología , África Occidental/epidemiología , Salud Global , Humanos , Laboratorios , Organización Mundial de la Salud
17.
N Engl J Med ; 371(16): 1481-95, 2014 10 16.
Artículo en Inglés | MEDLINE | ID: mdl-25244186

RESUMEN

BACKGROUND: On March 23, 2014, the World Health Organization (WHO) was notified of an outbreak of Ebola virus disease (EVD) in Guinea. On August 8, the WHO declared the epidemic to be a "public health emergency of international concern." METHODS: By September 14, 2014, a total of 4507 probable and confirmed cases, including 2296 deaths from EVD (Zaire species) had been reported from five countries in West Africa--Guinea, Liberia, Nigeria, Senegal, and Sierra Leone. We analyzed a detailed subset of data on 3343 confirmed and 667 probable Ebola cases collected in Guinea, Liberia, Nigeria, and Sierra Leone as of September 14. RESULTS: The majority of patients are 15 to 44 years of age (49.9% male), and we estimate that the case fatality rate is 70.8% (95% confidence interval [CI], 69 to 73) among persons with known clinical outcome of infection. The course of infection, including signs and symptoms, incubation period (11.4 days), and serial interval (15.3 days), is similar to that reported in previous outbreaks of EVD. On the basis of the initial periods of exponential growth, the estimated basic reproduction numbers (R0 ) are 1.71 (95% CI, 1.44 to 2.01) for Guinea, 1.83 (95% CI, 1.72 to 1.94) for Liberia, and 2.02 (95% CI, 1.79 to 2.26) for Sierra Leone. The estimated current reproduction numbers (R) are 1.81 (95% CI, 1.60 to 2.03) for Guinea, 1.51 (95% CI, 1.41 to 1.60) for Liberia, and 1.38 (95% CI, 1.27 to 1.51) for Sierra Leone; the corresponding doubling times are 15.7 days (95% CI, 12.9 to 20.3) for Guinea, 23.6 days (95% CI, 20.2 to 28.2) for Liberia, and 30.2 days (95% CI, 23.6 to 42.3) for Sierra Leone. Assuming no change in the control measures for this epidemic, by November 2, 2014, the cumulative reported numbers of confirmed and probable cases are predicted to be 5740 in Guinea, 9890 in Liberia, and 5000 in Sierra Leone, exceeding 20,000 in total. CONCLUSIONS: These data indicate that without drastic improvements in control measures, the numbers of cases of and deaths from EVD are expected to continue increasing from hundreds to thousands per week in the coming months.


Asunto(s)
Epidemias/estadística & datos numéricos , Fiebre Hemorrágica Ebola/epidemiología , Adolescente , Adulto , África Occidental/epidemiología , Niño , Ebolavirus , Femenino , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/transmisión , Humanos , Incidencia , Periodo de Incubación de Enfermedades Infecciosas , Masculino , Persona de Mediana Edad , Mortalidad , Adulto Joven
18.
BMC Infect Dis ; 17(1): 304, 2017 04 24.
Artículo en Inglés | MEDLINE | ID: mdl-28438127

RESUMEN

BACKGROUND: By the end of the 2013­2016 West African Ebola Virus Disease (EVD) outbreaks, a total of 3814 cases (probable and confirmed) and 2544 deaths were reported in Guinea. Clearly, surveillance activities aiming at stopping human-to-human transmission have been the breakthrough of EVD outbreak management, but their application has been at times easier said than done. This article presents five confirmed or probable EVD cases that arose in Conakry towards the end of the Guinea epidemic, which demonstrate flaws in surveillance and follow-up. CASE PRESENTATION: For case 1, safe burial requirements were not followed. For cases 1 and 2, negative Polymerase Chain Reaction (PCR) results were interpreted as no infection. For the first case, the sample may have not been taken properly while for the second the disease was possibly at its early stage. Case 3 was stopped at a border health checkpoint and despite her high temperature she was allowed to continue the bus journey. For case 4, an oral swab sample was supposedly taken after death but could not be found for retrospective testing. Despite characteristic symptomatology, case 5 was not identified as a suspect case for as long as 3 weeks. CONCLUSION: In epidemic contexts, health systems must be able to track all samples of suspect cases and deaths, regardless of their laboratory results. Social mobilization in communities and training in health care facilities must be strengthened at the tail of an outbreak, to avoid the natural slackening of disease surveillance, in particular for long-lasting and deadly epidemics.


Asunto(s)
Ebolavirus/genética , Fiebre Hemorrágica Ebola/diagnóstico , Adolescente , Niño , Brotes de Enfermedades , Ebolavirus/aislamiento & purificación , Femenino , Fiebre/etiología , Guinea/epidemiología , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/transmisión , Fiebre Hemorrágica Ebola/virología , Humanos , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa , ARN Viral/genética , ARN Viral/metabolismo , Adulto Joven
19.
Reprod Health ; 14(1): 3, 2017 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-28077145

RESUMEN

BACKGROUND: Every woman is entitled to respectful care during childbirth; so it is concerning to hear of informal reports of mistreatment during childbirth in Guinea. This study sought to explore the perceptions and experiences of mistreatment during childbirth, from the perspectives of women and service providers, and the analysis presents findings according to a typology of mistreatment during childbirth. METHODS: This study used qualitative methods (in-depth interviews (IDIs) and focus group discussions (FGDs)) and was conducted with four groups of participants: women of reproductive age, midwives, doctors, and administrators. The study took place in two sites in Guinea, an urban area (Mamou) and peri-urban (Pita). Data collection was conducted in two health facilities for providers and administrators, and in the health facility catchment area for women. Data were collected in local languages (Pular and Malinké), then transcribed and analyzed in French. We used a thematic analysis approach and coded transcripts manually. RESULTS: A total of 64 IDIs and eight FGDs were conducted and are included in this analysis, including 40 IDIs and eight FGDs with women of reproductive age, 5 IDIs with doctors, 13 IDIs with midwives, and 6 IDIs with administrators. Participants described their own personal experiences, experiences of women in their communities and perceptions regarding mistreatment during childbirth. Results were organized according to a typology of mistreatment during childbirth, and included instances of physical abuse, verbal abuse, abandonment and neglect. Women described being slapped by providers, yelled at for noncompliance with provider requests, giving birth on the floor and without skilled attendance in the health facility. Poor physical conditions of health facilities and health workforce constraints contributed to experiences of mistreatment. CONCLUSIONS: These results are important because they demonstrate that the mistreatment of women during childbirth exists in Guinea and occurs in multiple forms. These data should be used by the Ministry of Health and other stakeholders to develop strategies to reduce and prevent the mistreatment of women during childbirth.


Asunto(s)
Actitud del Personal de Salud , Instituciones de Salud/normas , Parto/psicología , Investigación Cualitativa , Calidad de la Atención de Salud , Percepción Social , Trastornos por Estrés Postraumático/psicología , Mujeres/psicología , Adolescente , Adulto , Femenino , Guinea/epidemiología , Accesibilidad a los Servicios de Salud , Humanos , Persona de Mediana Edad , Embarazo , Trastornos por Estrés Postraumático/epidemiología , Adulto Joven
20.
Reprod Health ; 14(1): 4, 2017 Jan 13.
Artículo en Inglés | MEDLINE | ID: mdl-28086975

RESUMEN

BACKGROUND: Reducing maternal morbidity and mortality remains a key health challenge in Guinea. Anecdotal evidence suggests that women in Guinea are subjected to mistreatment during childbirth in health facilities, but limited research exists on this topic. This study was conducted to better understand the social norms and the acceptability of four scenarios of mistreatment during childbirth, from the perspectives of women and service providers. METHODS: This study used qualitative methods including in-depth interviews (IDIs) and focus group discussions (FGDs) with women of reproductive age, midwives, nurses and doctors. This study was conducted in one urban area (Mamou) and one peri-urban area (Pita) in Guinea. Participants were presented with four scenarios of mistreatment during childbirth, including a provider: (1) slapping a woman; (2) verbally abusing a woman; (3) refusing to help a woman; and (4) forcing a woman to give birth on the floor. Data were collected in local languages (Pular and Malinké) and French, and transcribed and analyzed in French. We used a thematic analysis approach and manually coded the data using a codebook developed for the project. RESULTS: A total of 40 IDIs and eight FGDs were conducted with women of reproductive age, 5 IDIs with doctors, and 13 IDIs with midwives. Most women were not accepting of any of the scenarios, unless the action was perceived to be used to save the life of the mother or child. However, they perceived a woman's disobedience and uncooperativeness to contribute to her poor treatment. Women reacted to this mistreatment by accepting poor treatment, refusal to use the same hospital, revenge against the provider or complaints to hospital management. Service providers were accepting of mistreatment when women were disobedient, uncooperative, or to save the life of the baby. CONCLUSIONS: This is the first known study on mistreatment of women during childbirth to be conducted in Guinea. Both women and service providers were accepting of mistreatment during childbirth under certain conditions. Any approach to preventing and eliminating mistreatment during childbirth must consider these important contextual and social norms and develop a comprehensive intervention that addresses root causes. Further research is needed on how to measure mistreatment during childbirth in Guinea.


Asunto(s)
Actitud del Personal de Salud , Instituciones de Salud/normas , Parto/psicología , Trastornos por Estrés Postraumático/psicología , Mujeres/psicología , Adolescente , Adulto , Parto Obstétrico , Femenino , Guinea/epidemiología , Accesibilidad a los Servicios de Salud , Humanos , Masculino , Errores Médicos , Persona de Mediana Edad , Embarazo , Investigación Cualitativa , Calidad de la Atención de Salud , Percepción Social , Trastornos por Estrés Postraumático/epidemiología , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA