World Health Organization http://www.who.int/features/qa/18/en/ http://www.who.int/features/qa/18/en/ „What is the deadliest disease in the world?” WHO 2012 „What is the deadliest disease in the world?” "What is the deadliest disease in the world?" WHO 2012 one of the deadliest viruses at least five diseases WHO 2012 WHO 2012 "What is the deadliest disease in the world?" http://www.who.int/features/qa/18/en/ „What is the deadliest disease in the world?” what is the deadliest disease in the world? http://www.who.int/features/qa/18/en/ http://www.who.int/features/qa/18/en/ "What is the deadliest disease in the world?" "What is the deadliest disease in the world?" "What is the deadliest disease in the world?"