Diphtheria is a bacterial infection that causes sore throat and spreads easily.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/diphtheria-kills-6-hyderabad-officials-decide-vaccine-children
[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/vaccination
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/child-health
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/infectious-diseases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health