The findings might show that people become sick sooner after infection than we thought, and remain infectious more than a week later.
The first results from a UK trial that deliberately exposed people to the coronavirus are finally here. Among other things, the research found that people who caught the infection became symptomatic within two days and remained infectious for longer than a week. None of the volunteers became severely sick, though a few did continue to have trouble smelling things months later.The research is an example of a human challenge trial.
in the past for other infectious diseases, often in areas where these diseases have become rare or difficult to track in their natural environment. But there was no shortage of controversy about using them to study the SARS-CoV-2 coronavirus and covid-19, as some researchers hadCriticisms included the fact that covid-19 was and remains widespread in the world, including in the UK.
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