Top 10 World's Most Dangerous Viruses That Can End Millions

Top 10 World's Most Dangerous Viruses That Can End Millions

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10.Marburg Virus

Found in both non-human primates and humans alike, the Marburg Virus is considered to be incredibly dangerous. The World Health Organization deems it to be a Group 4 Pathogen, requiring biosafety level 4 containment procedures, the highest of all the biosafety precaution levels.

It was first discovered in 1967, when small outbreaks in the german cities of Marburg, Frankfurt and the Yugoslavian capital Belgrade were noted. It began when german workers were exposed to the tissue of infected Grivet Monkeys at the Behringwerke industrial plant.

There have been thirteen separate occasions that we know of that Marburg virus has infected humans across the world. Only two of those times were major outbreaks, a case in Durba, Wats and the Democratic Republic of the Congo between 1998 and 2000, where 154 people were infected and 128 passed away. The second was in Angola, between 2004 and 2005, where 252 people were infected and 227 of them passed away. As you can tell from these statistics the virus is incredibly damaging but doesn’t really have many capabilities to spread, though that’s probably because it takes out its victims too quickly.

9.Rabies

Rabies is a viral disease that causes inflammation of the brain in not just humans, but many other mammals as well. Early symptoms usually include fevers and a tingling where the exposure began, followed by violent movements, uncontrolled excitement, an inability to move parts of the body, confusion and loss of consciousness. When symptoms appear it’s already too late, the result is almost always the demise of the victim.

Rabies is caused by something known as a Lyssavirus. These are specific genus’ of RNA viruses that use mammals as a natural host. The rabies virus, in particular, is spread when an infected animal bites or scratches another animal or a human, or if their saliva comes into contact with the eyes, mouth or nose of another mammal.

You might not think that the Rabies virus really impacts many people, but that assumption couldn’t be further from the truth. According to a paper from the US National Library of Medicine, around 17,400 humans passed on due to Rabies in 2015 alone. 95% of these incidents occur in Africa and Asia, and 40% of all of them are in children under the age of 15.

8.Smallpox

Luckily, Smallpox has been all but eradicated from the world. The last naturally occurring case was diagnosed back in October 1977, with WHO claiming it was eradicated shortly after in 1980. The origins of this virus are unknown, but the earliest evidence links back to the 3rd century BC, in Egyptian Mummies. In the 18th century in Europe, it was estimated that around 400,000 people on the continent passed on due to the disease every single year, and one-third of all cases resulted in blindness. In its last 100 years of existence, the disease was thought to have ended the lives of around 500 million people.
Because Smallpox was so dangerous, the British actually used it as an agent of biological attack at the Siege of Fort Pitt in the midst of the French and Indian wars, against France and their Native American allies. Officers in the British forces ordered paid and used smallpox against the Native Americans, in a deliberate ploy to take them out without risking any of their men. The use of Smallpox in the art of combat was explored again throughout world war 2, with all the major players in the conflict trying to figure out a way to weaponize the virus. This was succeeded by the Soviet Union, where the strain they had developed escaped containment with a near 100% mortality rate.

7.Hantavirus

Hantavirus normally infects rodents but is incapable of causing any disease in them. This makes rodents the perfect superspreaders of the viral infection to humans, who become infected with Hantavirus through contact with rodent urine, saliva or faeces. Not all Hantavirus’ are particularly dangerous, but some strains can cause some very serious diseases in the Human Body.

The most dangerous of these is likely Andes Orthohantavirus. It doesn’t have any of the nastier side effects of some of the other hantaviruses, the worst symptom this one has is fluid build-up in the lungs, but it is the only hantavirus that has developed the ability to spread through human to human contact.