Omicron variant sweeps Boulder County

For a growing share of Boulder County residents, the 2021 holidays brought at least one unwelcome visitor-the SARS-CoV-2 virus. In the week between Christmas and New Year's Day, local testing sites recorded nearly 3,000 new positive cases*, one of the highest weekly totals at any point during the pandemic. That has driven the testing positivity rate to 20.2% and the seven-day case rate to 757.5 pe...