Noun:

1. any disease easily transmitted by contact

2. an incident in which an infectious disease is transmitted

3. the communication of an attitude or emotional state among a number of people;

   "a contagion of mirth"
   "the infection of his enthusiasm for poetry"
   

infectionn.传染；传染病；影响

contaminationn.污染；污染物

pollutionn.污染；污染物

taintn.污点；耻辱；感染v.污染；中毒

poisonn.毒药；毒害；败坏道德之事vt.毒害；摧毁；中毒adj.有毒的；危险的

impurityn.不纯；杂质

dirtn.污垢；泥土；灰尘

septicityn.腐败性

toxicityn.毒性；毒效

transmissionn.传输；传播；播送；变速器

contagious diseasen.接触传染病

1. Tuberculosis is respiratory tract contagion.
   肺结核是呼吸道传染病。
2. What contagion does second liver belong to?
   乙肝属于什么传染病？
3. Fear spread through the crowd like a contagion.
   人们心中的恐惧像瘟疫一样蔓延开来。
4. Some diseases spread by contagion.
   有些疾病藉传染蔓延。