pox

基本解释

Not many weeks later she heard that Elizabeth had got the pox. Her white skin was all over pink pustules!
没过几周她就听说伊丽莎白出了水痘，她那洁白的皮肤上布满了粉红色的疱疹！
Destroying the remaining stocks of variola, or small pox virus, is seen by some countries as the final chapter in eradicating the disease to prevent the risk of accidental release.
销毁天花，或者小痘病毒的剩余库存，在一些国家，被认为是消除这种疾病，防止意外释放病毒所造成事故的最好办法。
Disease is also a risk, as members of tribal groups that have been contacted in the past have died of illnesses that they have no defence against, ranging from chicken pox to the common cold.
疾病也是一个危机，正如过去曾经接触过的，都已经死于疾病的其他部落的成员一样，他们没有任何的疾病防御，从水痘到普通的感冒都一样。

One of the museum's displays tells the story about when the president had a mild case of the infectious disease small pox.
You get a vaccine for chicken pox, it gets injected, and sometime later you're going to be protected against it.
当你拿到水痘疫苗,并注射入体内后,一段时间之后,你就可以免于感染
耶鲁公开课 - 生物医学工程探索课程节选
But Washington area resident Peggy Fox,mother of two, says applying pox party logic to the swine flu is crazy.

So I would always vote in favor of the vaccine rather than the chicken pox parties.
NPR: Slate's Medical Examiner: Chickenpox Vaccine Risks

any disease characterized by the formation of pustules on the skin that often leave pockmarks when healed