The new covid variant omicron has quickly overtaken delta as the dominant strain of Covid-19 in multiple countries, which now includes the US. New data released Dec. 20 shows omicron is responsible for 73 percent of new Covid-19 infections nationally during the week end Dec. 18; up from just 12.6 percent for the week prior. Bruce Farber, MD, chief of public health and epidemiology, and John D'Angelo, MD, senior vice president and executive director of emergency medicine services, discuss what is known so far about the more contagious Covid variant, how health systems are preparing, and urge the public to get vaccinated — and even more importantly to get a booster. Read more from Dr. Farber on the omicron variant.Chapters:Watch episodes of 20-Minute Health Talk on YouTube.