The US government hopes to have millions of doses of a new COVID-19 booster this fall. The vaccine will be formulated to target the Omicron variants, including the latest, BA.5. BA.5 is spreading rapidly in Colorado, though hospitalizations and case counts have remained relatively steady. We get a pandemic checkup from Dr. Anuj Mehta, a pulmonary and critical care physician at Denver Health, who also advises the state health department.