Editor’s Note: Kent Sepkowitz is a physician and infection control expert at Memorial Sloan Kettering Cancer Center in New York. The views expressed in this commentary are his own. View more opinion on CNN. This piece has been updated to reflect the latest news.

CNN  — 

The Omicron coronavirus variant is now spreading at warp speed. It has become the dominant coronavirus strain, accounting for 59% of all new cases as of Christmas Day, according to data from the US Centers for Disease Control and Prevention.