Whilst countries in the tropics and subtropics exhibit diverse patterns of seasonal flu activity, they can be grouped into eight geographical zones to optimise vaccine formulation and delivery timi
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/influenza-tropics-shows-variable-seasonality
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/medical-express
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/influenza
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asia
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa