Many respiratory-tract infectious diseases, including Legionnaires Disease and SARS, spread quickly through closed air-conditioning systems; extended-wear contact lenses are ideal breeding grounds for bacterial conjunctivitis; in many cosmetic products there are bovine collagens containing mad cow disease proteins; and "airport malaria" circles the globe on airliners.
許多呼吸道感染症，像是退伍軍人症以及此次的 SARS，最適合在有中央空調系統的密閉空間中快速傳播；標榜可以長時間配戴的隱形眼鏡，竟成了細菌性角膜炎的新溫床；化妝品中的膠原質暗藏狂牛病蛋白體，「機場瘧疾」則隨著無遠弗屆的航班縱橫全球......。