​​Dr. B launched a free vaccine standby list in the U.S. before nationwide resources became available. At that time, we matched patients who needed a vaccine with providers who had extra vaccine doses. Our standby list prioritized patients according to local guidelines, guaranteeing that those at the highest risk were bumped to the front of the list. In just a few months, we launched in 37 states, onboarded 700+ vaccine providers and sent out 1 million+ dose alerts.