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Covid-19: Delta variant detected in over 80% of Brazil’s Rio de Janeiro state samples

RIO DE JANEIRO, BRAZIL - The spread of this new strain of the virus has been extremely fast. In June, the Delta accounted for only 6% of cases. The following month it jumped to 48%, and now it is the absolute majority.

The studies are conducted by researcher Ana Tereza Vasconcelos' team from the Ministry of Science, Technology and Innovation's National Laboratory for Scientific Computing (LNCC). The genomic surveillance network has processed 3,952 viral genomes from 91 municipalities. The patients come from reference centers and hospitals across the state.

A study published in The Lancet scientific journal on Saturday . . .

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