Pfizer booster study lifts the mood compared to the Omicron variant

CDC chief says Omicron has been mostly mild so far

How Can Scientists Update Coronavirus Vaccines For Omicron? A microbiologist answers 5 questions about how Moderna and Pfizer could quickly adapt mRNA vaccines

Roshni Mathew, MD, on the Omicron variant

Contact tracing is increasing in some states as Omicron hits the United States

UK toughens travel test rules amid Omicron concerns