As it became clear that the solution to the COVID pandemic would come from medical research, many people volunteered for human challenge trials.
Articles on human challenge trials
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There are many scientific and ethical challenges ahead. But these types of trials have helped in the development of vaccines against a few diseases. Could they do the same for COVID-19?
Thousands of people around the world have said they are willing to be exposed to COVID-19 to test new vaccines. Since we don’t fully understand the long-term effects of the disease, is this ethical?


