Prior to the COVID-19 pandemic, 28-year-old Mayra Ramirez was working as a paralegal for an immigration law firm in Chicago. She enjoyed walking her dogs and running 5K races. Ramirez has a condition requiring medication that could’ve suppressed her immune system but was otherwise healthy. When the Illinois governor issued a shelter-in-place order in March, she began working from home, hardly leaving the house. So she has no idea how she contracted COVID-19.