Delhi has seen a rise in the incidence of "chicken pox" during the recent couple of
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/rise-chicken-pox-cases
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health