Acute respiratory infections, the second major childhood killer after diarrhoea, are now the focus of national control programmes in two thirds of the countries where pneumonia is a significant problem.
急性呼吸道感染是仅次于腹泻的儿童死亡第二大疾病，现已成为三分之二肺炎发病率严重的国家的控制方案重点。