Covid-19 data: Making sense of R, Ro and herd immunity – The Wall Street Journal

As Covid-19 has swept the globe, a confusing array of numbers has been unleashed along with the virus. The figures are related, but differ in meaning and magnitude.

As Covid-19 has swept the globe, a confusing array of numbers has been unleashed along with the virus. The figures are related, but differ in meaning and magnitude.

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