During the 2^nd quarter of 2023 (April – Jun) 15 Jun : TTCL Public Company (Limited) was organized the Influenza Vaccine. On Thursday 15^th June 2023 at Head Office and Monday 19^th June 2023 at Project Site. A total of employee 849 persons. For head office 508 persons and Project site 341 persons. The objective is to enhance the prevention of influenza. And epidemic prevention Because the disease is contagious. The cause of the contagious respiratory infection cough, sneeze caused by viruses. Therefore, to get the vaccine to reduce the risk of influenza disease is decreased. which has a comprehensive health effective coverage.