How much of Brazil's population will be immune to Covid-19, based on the upcoming sampling research?
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Herd immunity is an immunological effect of when the majority of a population is immune to a disease (either by vaccination or by getting sick), and that prevents the disease from spreading.
A group of Brazilian researchers from the Pelotas Federal University is organizing major research to evaluate the herd immunity against COVID-19 in all 5 regions of the country.
If the conclusions of such a research are published by June 30, 2020, which percentage of Brazil's population will be considered imune to Sar-CoV-2 for having already had contact with the vírus?