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If not shots, why not host a version of the 1970s chicken pox party?

So it keeps passing along like it's chicken pox.

It is caused by a reactivation of the Herpes zoster virus - the virus that causes chicken pox.

Potential donors who have received other vaccines that contain small amounts of live viruses, such as those for chicken pox, polio and yellow fever, are also required to wait before donating blood.

Illnesses including small outbreaks of chicken pox and hand foot and mouth disease have spread through some Chicago shelters where people sleep on cots close to each other.