Last week, both Walgreens and Illinois Gov. J.B. Pritzker acknowledged that the pharmacy chain was experiencing problems with its COVID-19 vaccine sign-up process, as the company's website showed no availability or would not allow patients to book available first-dose appointments, frustrating eligible Illinois residents seeking to get their shots. "In this fluid situation during which vaccine inventory remains limited, our aim is to ensure eligible patients are able to receive vaccinations as soon as possible," a Walgreens spokesman said in a statement on Thursday. "We are continuing to enhance our vaccine scheduler with a great sense of urgency and are committed to providing the most convenient solution for our customers."