2020-12-24 03:35:37 GMT2020-12-24 11:35:37(Beijing Time) Xinhua English by Yosley Carrero CIEGO DE AVILA, Cuba, Dec. 23 (Xinhua) -- Dr. Dayan Meneces, 46, works as the head of sanitary control at Cuba's Jardines del Rey International Airport, which mainly serves seaside resorts of Cayo Coco and Cayo Guillermo. Like him, thousands of frontline workers guarantee strict fulfillment of nationwide safety protocols in place at the airports' security checkpoints to detect travelers with COVID-19 symptoms and reduce potential exposure of the work force to the virus. Meneces, who lives in the central town of Moron with his family, has changed his daily routine since the airport reopened in September with a plane carrying international tourists from Canada.