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TUESDAY, Jan. 25, 2022 (HealthDay News) -- Pfizer Inc. announced Tuesday that it has launched a trial that will compare its existing COVID-19 vaccine against a new version tailored to beat back the highly contagious Omicron variant.

Is Omicron on the downswing? After swamping America with new COVID cases, there are signs the Omicron variant surge may be ebbing, new data shows. Read more

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WEDNESDAY, Jan. 19, 2022 (HealthDay News) -- Numerous COVID restrictions will be dropped in England because government experts believe the Omicron variant "has now peaked nationally," British Prime Minister Boris Johnson said Wednesday.

TUESDAY, Jan. 18, 2022 (HealthDay News) -- It is too soon to determine whether omicron's rapid spread will turn a pandemic virus into an endemic disease, America's top infectious disease expert says.

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WEDNESDAY, Jan. 12, 2022 (HealthDay News) -- In a sign that the highly contagious omicron variant is sparing no one, a report shows that new COVID-19 cases among U.S. children spiked to a high of more than 580,000 for the week ending Jan. 6, a 78 percent increase from the week before.