發送短信 : Infection in an aging population

             ___      _____      ___     ______   
    ___     / _ \\   |__  //    / _ \\  |      \\ 
   /   ||  | / \ ||    / //    | / \ || |  --  // 
  | [] ||  | \_/ ||   / //__   | \_/ || |  --  \\ 
   \__ ||   \___//   /_____||   \___//  |______// 
    -|_||   `---`    `-----`    `---`   `------`  
     `-`