The research and development (R&D) ecosystem has evolved over the past decade to include pandemic infectious diseases, building on experience from multiple recent outbreaks. Outcomes of this ...evolution have been particularly evident during the COVID-19 pandemic with accelerated development of vaccines and monoclonal antibodies, as well as novel clinical trial designs. These products were developed, trialled, manufactured, and authorised for use in several countries within a year of the pandemic's onset. Many gaps remain, however, that must be bridged to establish a truly efficient and effective end-to-end R&D preparedness and response ecosystem. Foremost among them is a global financing system. In addition, important changes are required for multiple aspects of enabling sciences and product development. For each of these elements we identify priorities for improved and faster functionality. There will be no better time than now to seriously address these needs, however difficult, as the ravages of COVID-19 continue to accelerate with devastating health, social, and economic consequences for the entire community of nations.
The relationship between nutritional status and the immune system has been a topic of study for much of the 20th century. Dramatic increases in our understanding of the organization of the immune ...system and the factors that regulate immune function have demonstrated a remarkable and close concordance between host nutritional status and immunity. This report traces the increasing sophistication of our understanding of these relationships and their impact on susceptibility to infection through six stages to the present time. The cyclical relationship between poor nutrition, increased susceptibility to infectious diseases, leading to immunological dysfunction and metabolic responses that further alter nutritional status is described and, wherever possible, related to physiological mechanisms. In addition, the particular role of Nevin Scrimshaw in guiding the progress over the past 50 y is discussed. J. Nutr. 133: 336S–340S, 2003.
The Origin of COVID-19 and Why It Matters Morens, David M; Breman, Joel G; Calisher, Charles H ...
The American journal of tropical medicine and hygiene,
09/2020, Letnik:
103, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The COVID-19 pandemic is among the deadliest infectious diseases to have emerged in recent history. As with all past pandemics, the specific mechanism of its emergence in humans remains unknown. ...Nevertheless, a large body of virologic, epidemiologic, veterinary, and ecologic data establishes that the new virus, SARS-CoV-2, evolved directly or indirectly from a β-coronavirus in the sarbecovirus (SARS-like virus) group that naturally infect bats and pangolins in Asia and Southeast Asia. Scientists have warned for decades that such sarbecoviruses are poised to emerge again and again, identified risk factors, and argued for enhanced pandemic prevention and control efforts. Unfortunately, few such preventive actions were taken resulting in the latest coronavirus emergence detected in late 2019 which quickly spread pandemically. The risk of similar coronavirus outbreaks in the future remains high. In addition to controlling the COVID-19 pandemic, we must undertake vigorous scientific, public health, and societal actions, including significantly increased funding for basic and applied research addressing disease emergence, to prevent this tragic history from repeating itself.
COVID-19 is the latest zoonotic RNA virus epidemic of concern. Learning how it began and spread will help to determine how to reduce the risk of future events. We review major RNA virus outbreaks ...since 1967 to identify common features and opportunities to prevent emergence, including ancestral viral origins in birds, bats, and other mammals; animal reservoirs and intermediate hosts; and pathways for zoonotic spillover and community spread, leading to local, regional, or international outbreaks. The increasing scientific evidence concerning the origins of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) is most consistent with a zoonotic origin and a spillover pathway from wildlife to people via wildlife farming and the wildlife trade. We apply what we know about these outbreaks to identify relevant, feasible, and implementable interventions. We identify three primary targets for pandemic prevention and preparedness: first, smart surveillance coupled with epidemiological risk assessment across wildlife–livestock–human (One Health) spillover interfaces; second, research to enhance pandemic preparedness and expedite development of vaccines and therapeutics; and third, strategies to reduce underlying drivers of spillover risk and spread and reduce the influence of misinformation. For all three, continued efforts to improve and integrate biosafety and biosecurity with the implementation of a One Health approach are essential. We discuss new models to address the challenges of creating an inclusive and effective governance structure, with the necessary stable funding for cross-disciplinary collaborative research. Finally, we offer recommendations for feasible actions to close the knowledge gaps across the One Health continuum and improve preparedness and response in the future.
The US has experienced a series of epidemics during the past five decades. None has tested the nation's resilience like the coronavirus disease 2019 (COVID-19) pandemic, which has laid bare critical ...weaknesses in US pandemic preparedness and domestic leadership and the nation's decline in global standing in public health. Pandemic response has been politicized, proven public health measures undermined, and public confidence in a science-based public health system reduced. This has been compounded by the large number of citizens without ready access to health care, who are overrepresented among infected, hospitalized, and fatal cases. Here, as part of the National Academy of Medicine's Vital Directions for Health and Health Care: Priorities for 2021 initiative, we review the US approach to pandemic preparedness and its impact on the response to COVID-19. We identify six steps that should be taken to strengthen US pandemic resilience, strengthen and modernize the US health care system, regain public confidence in government leadership in public health, and restore US engagement and leadership in global partnerships to address future pandemic threats domestically and around the world.
Funding: The study on which this Perspectives article is based was supported by a grant from the US Department of Health and Human Services, The Food and Drug Administration, and the National ...Institute of Allergy and Infectious Diseases to the National Academy of Medicine. ...to learn how to improve care, research must be designed to generate evidence that can support reliable inferences about safety and efficacy. ...the committee rejected the claim made by some stakeholders that due to Ebola’s high mortality rate, equipoise would not exist for studies of therapeutic interventions that included the possibility of randomization to a standard-of-care control arm 3. ...to frontline caregivers facing overwhelming clinical need and acute shortages of supplies and manpower in the early stages of the outbreak, research felt like an unjustifiable diversion of scarce resources.
Stunting is common in young children in developing countries, and is associated with increased morbidity, developmental delays, and mortality. Its complex pathogenesis likely involves poor ...intrauterine and postnatal nutrition, exposure to microbes, and the metabolic consequences of repeated infections. Acquired enteropathy affecting both gut structure and function likely plays a significant role in this outcome, especially in the first few months of life, and serve as a precursor to later interactions of infection and malnutrition. However, the lack of validated clinical diagnostic criteria has limited the ability to study its role, identify causative factors, and determine cost-effective interventions. This review addresses these issues through a historical approach, and provides recommendations to define and validate a working clinical diagnosis and to guide critical research in this area to effectively proceed. Prevention of early gut functional changes and inflammation may preclude or mitigate the later adverse vicious cycle of malnutrition and infection.
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