The approach to the corona virus is a progressive insight. Scientists learn more every day. For example, they now know that some infected people will not infect anyone else, while others will infect anyone they come into contact with. “This discrepancy is expressed by the K value,” says biostatistician Geert Molenberghs. “The lower the K value, the smaller the percentage of infected people responsible for the spread of a disease. With corona, the K value is very low. ”
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To express corona infectivity, media often use the R-value, or the reproduction number. That stands for the average number of people that an infected person themselves …
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