Research continues to emerge on the highly transmissible omicron variant, which went from being unknown a few short weeks ago to the dominant strain of COVID-19 in the United States this week.

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Omicron symptoms range from sore throat and body aches to fever and cough. But how quickly those symptoms appear seems to be different from the earlier versions of COVID-19. While research is in the ...

There’s so much public health officials are still learning about the Omicron COVID-19 variant, but one thing is certain: It spreads really quickly. Omicron now causes 99.5% of COVID-19 infections in ...