BRASILIA — Researchers in southern Brazil said they have discovered patients infected with two different variants of the new coronavirus simultaneously, reflecting concerns about the growing number of mutations in the country.
The researchers, who posted their findings Wednesday on the medical website medRxiv, said their study would be the first in the world to confirm co-infection with two variants of the coronavirus. The study has yet to be published in a scientific journal and has not been peer-reviewed.
The patients, both in their 30s, were infected in late November with the P.2 variant of coronavirus identified in Rio, also known as the B.1.1.28 lineage, and simultaneously t…
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