High fever is a common symptom of the deadly Ebola-like virus, often followed by bleeding and organ failure. The Marburg virus is a cousin of the equally deadly Ebola virus part of the filovirus family – and it kills on average half of those infected, It is a severe, often fatal illness with symptoms including headache, fever, muscle pains, vomiting blood and bleeding. Marburg virus has killed five people in Tanzania’s north-western Kagera region, why is the WHO not in a hurry to develop the vaccine for the Virus ?