The official FDA guidance says “adults 65 years of age and older and individuals 5 through 64 years who have at least one underlying condition that puts them at high risk for severe outcomes from COVID-19.” The CDC maintains a list of those conditions, and it’s a long one. They include:

• BMI above 30
• Mental health conditions
• Physical inactivity
• Heart conditions
• Diabetes
• Disabilities (including ADHD, autism, learning disabilities, cognitive impairment, and “limitations with self-care or activities of daily living”)
• Asthma
• Cancer
• Pregnancy and recent pregnancy
• Current and former smokers
• Neurologic conditions
• Chronic kidney, liver or lung disease
• HIV

It’s possible you’ll be asked to attest that you have one of those conditions. Willis noted that “California pharmacies don’t ask for medical documentation or a doctor’s prescription for people who self-attest.”