For anyone who has recently recovered from a COVID-19 infection and requires a letter to document their recovery for travel. Additional information below.A COVID exemption letter can protect you. Requirement for Proof of COVID-19 Vaccination for Air Passengers. These serve as documentation of recovery. SIGNATURE. Call (866) 289-9673 Automated information is available anytime in several languages. Intended for patients without active symptoms of COVID-19 who require a COVID-19 recovery letter for employment, travel, or other concerns. This page provides information on how and where exams are scheduled with the California Department of Real Estate (DRE)