April 2020 — At the entrance of an Allina Health clinic, a temporary sign reminds visitors of heightened safety measures during the COVID-19 pandemic. The notice instructs patients to stop and first meet with a greeter before checking in, emphasizing that the location does not provide community COVID-19 testing and that masks may be required during the visit. These portable A-frame signs became common across medical facilities in 2020–2021, helping manage visitor flow, screen for symptoms, and reinforce evolving public health protocols at clinics and hospitals throughout Minnesota.