COVID-19 vaccines: ethical framework concerning human challenge studies
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SHORT COMMUNICATION
COVID-19 vaccines: ethical framework concerning human challenge studies Daniela Calina 1 & Thomas Hartung 2,3 & Anca Oana Docea 4 & Demetrios A. Spandidos 5 & Alex M. Egorov 6,7 & Michael I. Shtilman 8 & Felix Carvalho 9 & Aristidis Tsatsakis 7,10,11,12 Received: 8 July 2020 / Accepted: 21 August 2020 # Springer Nature Switzerland AG 2020
Abstract Background The pandemic associated with the new SARS-CoV-2 coronavirus continues to spread worldwide. The most favorable epidemic control scenario, which provides long-term protection against COVID-19 outbreak, is the development and distribution of an effective and safe vaccine. The need to develop a new COVID-19 vaccine is pressing; however, it is likely to take a long time, possibly several years. This is due to the time required to demonstrate the safety and efficacy of the proposed vaccine. and the time required to manufacture and distribute millions of doses. Objectives To accelerate this development and associated safety testing, the deliberate infection of healthy volunteers has been suggested. The purpose of this short communication is to describe the ethical aspects of this type of testing, Results Deliberate infection of volunteers with a dangerous virus such as SARS-CoV-2 was initially considered unethical by researchers; but the current pandemic is so different from previous ones that these studies are considered ethical if certain criteria are met. Participants in human challenge studies must be relatively young, in good health and must receive the highest quality medical care, with frequent monitoring. Tests should also be performed with great caution and specialized medical supervision. Besides, the fact that obtaining vaccines faster through deliberate infection studies of healthy people has greater benefits than risks, has been demonstrated by obtaining other vaccines in other historical pandemics such as: smallpox, influenza, malaria, typhoid fever, Dengue fever and Zika. Conclusions One possibility to shorten the time required for the development of COVID-19 vaccines is to reduce clinical phases II and III by using human challenge studies through eliberate infection of healthy volunteers with SARS-CoV-2 after administration of the candidate vaccine. Accelerating the development of a COVID-19 vaccine even for a few weeks or months would have a great beneficial impact on public health by saving many lives.
Daniela Calina, Thomas Hartung and Anca Oana Docea contributed equally to this work. * Daniela Calina [email protected] * Aristidis Tsatsakis [email protected]
6
FSBSI “Chumakov Federal Scientific Center for Research and Development of Immune- and Biological Products of Russian Academy of Sciences”, 108819 Moscow, Russia
7
Russian Academy of Sciences, Moscow, Russia
8
D.I. Mendeleyev University of Chemical Technology, 125047 Moscow, Russia
9
UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
1
Department of Clinical Pharma
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