THE QUESTION. Politics and science do not always have the same tempo , sometimes at the risk of a certain discrepancy. Since the start of the epidemic, this lag has been observed on numerous occasions. This is the case today in the United States. The country most fatally affected by the pandemic has urgently authorized a new treatment against Covid-19, in this case the transfusion of blood plasma from healed people to hospitalized patients.
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To justify the urgency of this decision, President Donald Trump, but also the American Medicines Agency (FDA) have boasted an apparently eloquent figure: this method would reduce mortality by 35%. Is this statistic correct?
CHECKS. The principle is quite simple on paper. When a person is infected with a virus - in this case SARS-CoV-2, from the coronavirus family, responsible for Covid-19 disease - they produce antibodies that fight against the foreign body. These
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