WASHINGTON — The Omicron variant of the coronavirus has dominated the news since its discovery in southern Africa was announced last week, but it is the Delta variant — which has been in the United States for months — that is still unilaterally driving the current increase in infection rates in parts of the country.
The disconnect presents public health officials with a new challenge: warning Americans about a new strain of the coronavirus while reminding them that an older strain is showing clear signs of resurgence.
“I know that the news is focused on Omicron, but we should remember that 99.9 percent of cases in the country right now are
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