Asked by: Anonymous
It is possible to have an extremely mild case of chicken pox as a very young child without producing enough antibodies, so leaving you open to subsequent doses. Generally though, one proper dose of chicken pox will set you up with life immunity.
However the varicella zoster virus, which causes chicken pox, is never fully eliminated from the body and can flare up in immuno-compromised adults to cause the quite different disease of herpes zoster (shingles).
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Authors
Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.
