Despite confirmation of three cases last month, Zika may not be a recent introduction to the country.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/zika-not-priority-chikungunya-and-dengue-bigger-threats-niv-chief
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/zika-virus
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chikungunya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vector-borne-diseases
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-council-medical-research-icmr
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/swine-flu
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/influenza
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/infectious-diseases
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health