Walgreens has introduced the Walgreens COVID-19 Index, a new interactive tracking tool. Powered by testing data from Aegis Sciences Corp., it is among the first to uniquely identify the spread of current and emerging variants in near real-time. New data from the Walgreens COVID-19 Index shows more than 95% of all positive COVID-19 cases are presumed to be the Omicron variant. The data reinforce the importance of vaccinations and testing in helping to mitigate the spread of COVID-19.