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1.
Eval Program Plann ; 98: 102300, 2023 06.
Artículo en Inglés | MEDLINE | ID: covidwho-2314567

RESUMEN

Recent decades have seen a growth in theoretical frameworks focusing on systems, context and the dynamic interplay of multiple variables, stimulating interest in complementary research and programme evaluation methods. With resilience theory now emphasising the complex and dynamic nature of resilience capacities, processes and outcomes, resilience programming stands to benefit from approaches such as design-based research and realist research/evaluation. The aim of this collaborative (researcher/practitioner) study was to explore how such benefits can be achieved when programme theory spans individual, community and institutional outcomes, with a focus on the reciprocal processes involved in effecting change across the social system. The context of the research was a regional (Middle East and North Africa) project operating in contexts with an escalated risk of marginalised young people being drawn into illegal/harmful activity. The project's youth engagement and development approach combined participatory learning, skills training, and collective social action, adapted for diverse localities and during the COVID-19 crisis. Quantitative measures of individual and collective resilience were at the centre of a set of realist analyses evidencing systemic connections in changes to individual, collective and community resilience. Findings demonstrated the value, challenges and limitations of the applied research approach for adaptive, contextualised programming.


Asunto(s)
COVID-19 , Adolescente , Humanos , Evaluación de Programas y Proyectos de Salud
2.
Health Aff (Millwood) ; 42(3): 366-373, 2023 03.
Artículo en Inglés | MEDLINE | ID: covidwho-2285269

RESUMEN

Early detection and ongoing monitoring of infectious diseases depends on diagnostic testing. The US has a large, diverse system of public, academic, and private laboratories that develop new diagnostic tests; perform routine testing; and conduct specialized reference testing, such as genomic sequencing. These laboratories operate under a complex mix of laws and regulations at the federal, state, and local levels. The COVID-19 pandemic exposed major weaknesses in the nation's laboratory system, some of which were seen again during the global mpox outbreak in 2022. In this article we review how the US laboratory system has been designed to detect and monitor emerging infections, describe what gaps were revealed during COVID-19, and propose specific steps that policy makers can take both to strengthen the current system and to prepare the US for the next pandemic.


Asunto(s)
Enfermedades Transmisibles Emergentes , Pandemias , Humanos , Enfermedades Transmisibles Emergentes/epidemiología , Enfermedades Transmisibles Emergentes/prevención & control , COVID-19 , Laboratorios , Pandemias/prevención & control , Políticas
4.
J Infect Dis ; 223(1): 47-55, 2021 01 04.
Artículo en Inglés | MEDLINE | ID: covidwho-889569

RESUMEN

Passive transfer of antibodies from COVID-19 convalescent patients is being used as an experimental treatment for eligible patients with SARS-CoV-2 infections. The United States Food and Drug Administration's (FDA) guidelines for convalescent plasma initially recommended target antibody titers of 160. We evaluated SARS-CoV-2 neutralizing antibodies in sera from recovered COVID-19 patients using plaque reduction neutralization tests (PRNT) at moderate (PRNT50) and high (PRNT90) stringency thresholds. We found that neutralizing activity significantly increased with time post symptom onset (PSO), reaching a peak at 31-35 days PSO. At this point, the number of sera having neutralizing titers of at least 160 was approximately 93% (PRNT50) and approximately 54% (PRNT90). Sera with high SARS-CoV-2 antibody levels (>960 enzyme-linked immunosorbent assay titers) showed maximal activity, but not all high-titer sera contained neutralizing antibody at FDA recommended levels, particularly at high stringency. These results underscore the value of serum characterization for neutralization activity.


Asunto(s)
Anticuerpos Neutralizantes/sangre , Anticuerpos Antivirales/sangre , COVID-19/terapia , Pruebas de Neutralización , Ensayo de Inmunoadsorción Enzimática , Humanos , Inmunización Pasiva , Sueroterapia para COVID-19
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