Researchers in the US have discovered two new variants of coronavirus, one of which they say has became the dominant strain in the state of Ohio’s capital, Columbus, within just three weeks.
Scientists at Ohio State University said on Wednesday that they found the new variants from patients in the state, and warned the mutations could make the disease more easily spread from one person to another.
The researchers have not yet published their full findings, but the early results add to concerns that the disease could be mutating in different ways across the world without public health bodies noticing.
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