The World Health Organisation (WHO) has raised red alert for acute outbreaks of cholera and hepatitis E in Nigeria.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nigeria-red-alert-cholera-hepatitis-e-outbreaks
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cholera
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hepatitis
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nigeria
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa