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These are the 25 deadliest diseases in human history.Follow @newslexpoint
This mosquito born infectious disease causes symptoms that typically include fever and headache, which in severe cases can progress to coma or death. It is found primarily in the tropics and as of yet there is no effective vaccination.
The virus behind AIDS, a condition in humans in which progressive failure of the immune system allows life-threatening infections and cancers to thrive. Since its discovery AIDS has cause over 30 million deaths.
Measles is spread through respiration and is highly contagious as roughly 90% of people sharing living space with an infected person will catch it. While the vast majority of patients survive measles, complications occur fairly frequently, and may include bronchitis, and panencephalitis which is potentially fatal.
This chronic disease has had a long history of making its victims social pariahs due to the way it deforms the surface of the skin. Although these days treatments have been discovered, in many parts of the developing world leper colonies are still very prevalent.
A viral respiratory disease in humans, the last known case of the outbreak occurred in June 2003. SARS is not claimed to have been eradicated, however, as it may still be present in its natural host reservoirs (animal populations) and may return to the human population.
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