World Deadliest Disease List

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Although Science and Medicine have made a lot of progress, some of the deadliest diseases that made this list claim millions of lives each year,mostly in the underdeveloped and developing nations, and many are preventable. Many of these diseases can be minimized or prevented through education,public health practices, prevention and adequate treatment.
Here is list of the top 21 deadliest diseases of the world.


Growing evidence suggests that the Zika virus might be linked to neurological syndromes and congenital anomalies in newborn children. The spread of the disease had led some Latin American governments, including Colombia and El Salvador, to advise that women not get pregnant until 2018.
Zika virus disease is caused by a virus that is transmitted by Aedes mosquitoes.
Shown here are the mosquitoes in containers at the Institute of Biomedical Sciences of the Sao Paulo University in Brazil.

Symptoms of the disease include mild headaches, maculopapular rash, fever, malaise, conjunctivitis, and arthralgia.


Taking its name from the Ebola River, near which the disease first appeared in 1976, the virus is transmitted from person to person via direct contact with bodily fluids.
Symptoms include muscle pain, weakness, and high fever. It has a fatality rate of 90 percent.


An ancient and greatly feared disease, smallpox is fatal in as many as 30 percent of cases.
The death toll was estimated at almost 500 million until it was declared eradicated in 1977 after a WHO programme of vaccination.


Transmitted to humans via the bites of infected mosquitoes, these days Yellow Fever occurs most often in South America and Africa, and WHO estimates that of the 200,000 new cases each year, roughly 30,000 die.

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