Over the past four weeks, Omicron has risen rapidly in estimates. Even though not every Covid test is sent for genetic sequencing, the CDC works off samples and extrapolates estimates.

• From infants to teens, this hospital has a deluge of young Covid patients. Here's what parents want others to know • Update to CDC's Covid-19 isolation guidance is imminent, source says

Over the past four weeks, Omicron has risen rapidly in estimates. Even though not every Covid test is sent for genetic sequencing, the CDC works off samples and extrapolates estimates.
• From infants to teens, this hospital has a deluge of young Covid patients. Here's what parents want others to know • Update to CDC's Covid-19 isolation guidance is imminent, source says