1. Ebola: With an average fatality rate of about 50% and with a case fatality rate varying from 25% to 90%, Ebola is truly terrifying.
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2. Marburg virus: When the disease first appeared in 1967 in a lab, the mortality rate hovered around 25%. When the disease reappeared between 1998- 2000, that number was above 80%.
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3. Smallpox: Smallpox existed for 3,000 years and was one of the most feared diseases in history. Only in the 20th century, smallpox is believed to have killed 300 million people.
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Dr. Jenna Crowe-Riddell
4. Dengue : One of the most devastating diseases affecting the world is Dengue. The deadly infection claims the lives of 50,000 people each year.
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5. Hantavirus: Hantavirus pulmonary syndrome caught the attention of the United States back in 1993 when a healthy young man died of the disease.
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6. Meningitis: Even kissing can spread bacterial meningitis. When not treated immediately meningitis can have a mortality rate as high as 50%.