Ebola
Ebola is also commonly known as hemorrhagic fever. The virus has been named after the river where it was first observed in the equatorial region around the Zaire basin. It is one of the most virulent diseases known to mankind. The ebola virus is transmitted through the direct contact with blood, body fluids and even while handling infected patients. It took a toll of 25 -90 % of all the patients suffering from it. For the treatment of the disease, vaccines have been produced which are 99% effective. The symptoms of the disease are severe headache, high fever, pain in joints, muscles, weakness, sore throat and dizziness.