The Delta variant of COVID-19 has
risen from 3.4% of overall cases to 34.9% in Lazio, the region
around Rome, in a month, regional health pointman Alessio
D'Amato said Friday.
The first figure was taken by the Spallanzani infectious disease
hospital on May 18, and the second one Friday, he said.
He said the ten-fold rise was "very concerning".
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