As someone who suffers from atopic eczema and thus (as far as I know) am potentially at risk from what the child is suffering from; I found this article quite disturbing - as well as enlightening.

Firstly, I hope the child makes a quick and full recovery and is not suffering like those people shown on a Centre for Disease Control's web-page about this illness (http://www.bt.cdc.gov/training/smallpoxvaccine/reactions/ec_vac.html).

Secondly, I'm glad I now know about this. Although I doubt I'd ever need or be offered a smallpox vaccination; knowing to ask about this as a possible side affect is something I'll keep in mind if it becomes an issue!