Guidance adopted from the NIH (original statement available here)
In the event that logistical or supply constraints make it impossible to offer the available therapy to all eligible patients, the following principles apply:
Risk groups are based on 4 key elements:
Groups are listed by tier in descending order of priority
Unvaccinated individuals at risk of severe disease not included in Tier 1 (age ≥65 years or age <65 years with clinical risk factors)
Vaccinated individuals at high risk of severe disease age ≥65 years or age <65 with clinical risk factors
Note: Vaccinated individuals who have not received a COVID-19 vaccine booster dose are likely at higher risk for severe disease; patients in this situation within this tier should be prioritized for treatment