1·Infectious bronchitis generally begins with the symptoms of a common cold: runny nose, sore throat, fatigue, and chilliness.
感染性支气管炎起病时，一般具有普通感冒症状：出现流鼻涕、喉痛、疲乏和寒战。
2·So you have to ask, what other infectious diseases are we missing?
于是你不得不问，我们还忽略了哪些其他的感染性疾病？
3·Some people have criticized the idea of infectious cigarettes, arguing that as tobacco burns, it would kill any germs present.
有人指责这种感染性香烟的观念，争辩说存在的细菌会在香烟燃烧过程中烧死。
4·The way the body recognises an infection is by examining molecules from the infectious agent.
身体对外物感染的识别是通过检测感染性外物的分子来实现的。
5·TB is a chronic lung infection responsible for more deaths worldwide than any other infectious disease.
结核病是一种慢性的肺部感染，其位列于全球感染性疾病死因的第一位。