In recent weeks, many locations in the U.S. have been lifting indoor face mask requirements, despite less than 70 percent of the population being fully vaccinated against COVID-19 and less than 45 percent having received the booster. A new study published March 8 in The Lancet Public Health suggests that consistently maintaining face mask use until, and even two to 10 weeks beyond, reaching various vaccination coverage thresholds (e.g., 70 to 90 percent of people fully vaccinated) could not only prevent a substantial number of cases, hospitalizations, and deaths but also end up saving businesses, the health care system, insurance companies, taxpayers, and others money.