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Top 10 dangerous virus in the world

Top 10 dangerous virus in the world

Top dangerous virus which is affected people very seriously and cause of dead.  This list is generated by google search and analysis from difference websites.

Read More, Top 10 coronavirus(COVID-19) affected countries as march 2020

1.Marburg virus

#The Marburg virus is a hemorrhagic fever virus.
#Marburg virus of the Filoviridae family of viruses and a member of the species Marburg marburgvirus, genus Marburgvirus.
#Marburg virus (MARV) causes Marburg virus disease in humans and nonhuman primates, a form of viral hemorrhagic fever.
# The first case (probable) was a 35-years-old herdsman who frequently hunted near the area of Kaptum, known for its bat-infested caves.
#Marburg virus disease is a highly virulent disease that causes haemorrhagic fever, with a fatality ratio of up to 88%.

2.Ebola virus

#The first known Ebola outbreaks in humans struck simultaneously in the Republic of the Sudan and the Democratic Republic of Congo in 1976.
#Ebola virus disease (EVD), also known as Ebola haemorrhagic fever (EHF) or simply Ebola, is a viral haemorrhagic fever of humans and other primates caused by ebolaviruses.
#Signs and symptoms typically start between two days and three weeks after contracting the virus with a fever, sore throat, muscular pain, and headaches.
#Vomiting, diarrhoea and rash usually follow, along with decreased function of the liver and kidneys.
#The disease has a high risk of death, killing 25% to 90% of those infected, with an average of about 50%.

3.Rabies

#Rabies lyssavirus, formerly Rabies virus, is a neurotropic virus that causes rabies in humans and animals.
#Over 95 percent of infections are caused by dogs.
#A person who may have been exposed to rabies can usually be treated effectively if they seek help at once.
#In the United States, between 1 and 3 people contract rabies each year. From 2008 to 2017, the U.S. saw 23 human cases, eight of which were contracted outside the country.
#For treatment to be successful, it must be given before symptoms appear.

4.HIV

#The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans.
#HIV is a virus that damages the immune system. The immune system helps the body fight off infections.
#Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype.
# HIV infects and kills CD4 cells, which are a type of immune cell called T cells.
#An estimated 32 million people have died from HIV since the disease was first recognized in the early 1980s.

5.Smallpox

#Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor.
#The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980.
#The risk of death following contracting the disease was about 30%, with higher rates among babies.
#The initial symptoms of the disease included fever and vomiting.
#Who survived had extensive scarring of their skin, and some were left blind.

6.Hantavirus

#Hantavirus pulmonary syndrome (HPS) first gained wide attention in the U.S. in 1993.
#Hantavirus pulmonary syndrome (HPS) is one of two potentially fatal syndromes of zoonotic origin caused by species of hantavirus.
#These include Black Creek Canal virus (BCCV), New York orthohantavirus (NYV), Monongahela virus (MGLV), Sin Nombre orthohantavirus (SNV), and certain other members of Hantavirus genera that are native to the United States and Canada.
#Prodromal symptoms are flu-like ones, such as fever, cough, myalgia, headache, lethargy, and shortness of breath, which rapidly deteriorates into acute respiratory failure.
#There is no cure or vaccine for HPS.
#The virus is not transmitted from one person to another, rather, people contract the disease from exposure to the droppings of infected mice.

7.Influenza

#Influenza, commonly known as “the flu”, is an infectious disease caused by an influenza virus.
#The most common symptoms include: high fever, runny nose, sore throat, muscle and joint pain, headache, coughing, and feeling tired.
#During a typical flu season, up to 500,000 people worldwide will die from the illness, according to WHO.

8.Dengue

#Dengue virus first appeared in the 1950s in the Philippines and Thailand, and has since spread throughout the tropical and subtropical regions of the globe.
#Dengue virus (DENV) is the cause of dengue fever.
#It is a mosquito-borne, single positive-stranded RNA virus of the family Flaviviridae; genus Flavivirus.
#Up to 40% of the world’s population now lives in areas where dengue is endemic, and the disease — with the mosquitoes that carry it — is likely to spread farther as the world warms.
#Dengue sickens 50 to 100 million people a year, according to WHO.

9.Rotavirus

#Rotavirus is a genus of double-stranded RNA viruses in the family Reoviridae.
#Rotavirus is a type of infection that’s most common in children under the age of 5.
#There are ten species of the genus, referred to as A, B, C, D, E, F, G, H, I and J.
#Rotavirus A, the most common species, causes more than 90% of rotavirus infections in humans.
#The virus is transmitted by the faecal-oral route.

10.SARS-CoV

#The virus that causes severe acute respiratory syndrome, or SARS, first appeared in 2002  in the Guangdong province of southern China, according to the WHO.
#‎Family of Coronaviridae.
#The virus likely emerged in bats, initially, then hopped into nocturnal mammals called civets before finally infecting humans.
#After triggering an outbreak in China, SARS spread to 26 countries around the world, infecting more than 8000 people and killing more than 770 over the course of two years.

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