Most people in the United States have some degree of immune protection against Covid-19, either through vaccination, infection, or a combination of the two. But how...
In the 1980s, doctors in a British hospital deliberately tried to infect 15 volunteers with the coronavirus. COVID-19 did not yet exist — it was the...
Among several symptoms associated with COVID-19, scientists say that loss of smell may be the best indicator of the disease. The same thing was confirmed through...
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