除个别传染病如麻疹、天花等以外,绝大多数传染病都可以发生轻症不典型病人。也就是说,虽然受到病原体感染,但并不发生明显的临床症状,这些人不易被医生发现,和典型病人一样,他们可以排出病原体,同样可以起到传播疾病的作用。但每种传染病发生轻症不典型病人的机会是不一样的。 In addition to individual infectious diseases such as measles, smallpox, etc., the vast majority of infectious diseases can occur in patients with mild atypical disease. In other words, although infected with pathogens, but no obvious clinical symptoms, these people are not easy to be found by doctors, and typical patients, they can discharge pathogens, the same can play a role in the spread of the disease. However, the chances of developing atypical cases of each infectious disease are different.