Five cases of transfusion-transmitted dengue, including one case of dengue haemorrhagic fever, have been documented.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/do-not-donate-blood-six-months-if-infected-dengue-say-experts
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-chronicle-telangana
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chikungunya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dengue
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vector-borne-diseases
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health