The risk of exposure to COVID-19 while traveling after all passengers test negative 72 hours in advance of a flight is less than 0.1%. That’s according to a study that examined real-world customer data on Delta Air Lines’ COVID-tested flight corridors between New York-JFK, Atlanta and Italy’s Fiumicino International Airport. The peer-reviewed study published in Mayo Clinic Proceedings showed a single COVID-19 molecular test performed within 72 hours of departure could decrease the rate of people actively infected onboard a commercial aircraft to a level that is significantly below active community infection rates. For example, when the average community infection rate was at 1.1% — or about 1 in 100 people — infection rates on COVID-19-tested flights were .05% or 5 in 10,000 passengers. The Georgia Department of Health and Mayo Clinic conducted the study in conjunction with Delta. Dr. Henry Ting, Delta’s chief health officer, said the data collected from this study show that the routine use of a single molecular test within 72 hours before international travel for unvaccinated individuals “significantly mitigates the risk of COVID-19 exposure and transmission during airline travel.”