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Be aware of these 8 killer viruses

Human being has been battling with viruses since before humans had even evolved into its modern form. For some viral diseases, vaccines and antiviral drugs have been developed that allowed us to keep infections from spreading and helped infected people recover. Recently, several viruses came from animals and infected humans, claiming thousands of lives.

    Human being has been battling with viruses since before humans had even evolved into its modern form. For some viral diseases, vaccines and antiviral drugs have been developed that allowed us to keep infections from spreading and helped infected people recover. Recently, several viruses came from animals and infected humans, claiming thousands of lives. 
    But there are other viruses out there that are equally deadly, and some of them are even deadlier. Some viruses, including the novel coronavirus currently infecting people around the globe, it poses a serious threat to public health as there are no vaccines and antiviral drugs available.  
1. Marburg virus 
    Scientists identified the Marburg virus in 1967 when small outbreaks or infection occurred among lab workers in Germany. Marburg virus can cause hemorrhagic fever, that is infected people develop high fevers and bleeding throughout the body that can lead to shock, organ failure, and finally death. According to World Health Organization (WHO), the mortality rate in the first outbreak was 25%, but it was more in a consecutive outbreak in 1998-2000 in the Democratic Republic of Congo, in the 2005 outbreak in Angola. 
2. Ebola virus 
    Ebola Virus first appeared in 1976 in 2 simultaneous infections, one in what is now Nzara, South Sudan, and the other in Yambuku. Ebola virus occurred in a village near the Ebola River, from which the disease takes its name. Ebola is transmitted through contact with blood or other body fluids, or tissue from infected people or animals. Fruit bats are considered one of the primary hosts of the Ebola virus. Symptoms of Ebola virus infections are, Fever, Fatigue, Muscle pain, Headache, Sore throat followed by Vomiting, Diarrhea, Rash, Impaired kidney and liver function, In some cases, both internal and external bleeding. 
3. Hantavirus 
    Hantavirus pulmonary syndrome was first identified in 1993 in the U.S and the next outbreak took place in 1994 in Canada. Unlike many other viruses, Hantavirus is not transmitted from one person to another, rather it is transmitted to people from exposure to the droppings of infected mice. Early symptoms include fatigue, fever, and muscle aches, especially in thighs, hips, back, and sometimes shoulders. The late symptoms include coughing and shortness of breath, and the lungs fill with fluid.     
4. Rotavirus 
    Rotavirus officially begins in 1943. Rotavirus transmits easily among infants, babies, and young children. Children who get infected with rotavirus can become dehydrated and may need urgent medical attention. Two vaccines are now available to protect children and infants from rotavirus infections. Some of the symptoms of Rotavirus infections are severe watery diarrhea, vomiting, fever, and abdominal pain. Good hygiene like frequent hand washing and cleanliness is important but is not enough to control the spread of the disease.
  
5. Dengue virus 
     Dengue virus first appeared in the 1950s in parts of the Philippines and Thailand. Dengue virus causes dengue fever which is a mosquito-borne tropical disease. The mortality rate for dengue virus infection is around 2.5%. According to WHO, the dengue virus affects around 50 to 100 million people a year. Symptoms typically begin within three to fourteen days from infection. Symptoms of dengue virus infection may include a high fever, headache, vomiting, muscle and joint pains, and skin rash. In some countries, an approved vaccine is available for people under 9 - 45 years old, but recipients must have a confirmed history of dengue virus infection. 
6. Rabies virus
      Rabies first appeared in Boston in the year 1768. Over the next few years, it spread from there to various other parts of the world. Rabies is a viral disease which generally causes inflammation of the human brain. Early symptoms of rabies infection include fever and tingling at the site of exposure. Later symptoms of rabies may include violent movements, uncontrolled excitement, fear of water, confusion, and loss of consciousness. Raccoons and dogs are the most common carriers of the rabies virus. Protection for pre-exposure to rabies virus is 3 doses of rabies vaccine. 
7. Human immunodeficiency virus  
     Human immunodeficiency virus is also known as HIV, in the year around 1983, Luc Montagnier’s team at the Pasteur Institute in Paris discovered HIV. The deadliest virus of all in the modern world may be HIV. Symptoms of HIV may include fever, chills, rash, night sweats, muscle aches, sore throat, fatigue, swollen lymph nodes, mouth ulcers, etc. Powerful antiviral drugs and medicines have made it possible for people infected with HIV to live for years. According to the WHO African region, nearly 1 in every 25 adults is HIV-positive, accounting for more than two-thirds of the people worldwide.  
 8. SARS-CoV-2 
     SARS-CoV-2 belongs to a large family of viruses as SARS-CoV, known as serious acute respiratory syndrome coronaviruses, and was first identified in December 2019 in the Chinese city of Wuhan so it is also known as Wuhan virus. The ongoing outbreak of this virus has put an extensive quarantine of Wuhan and nearby cities and global lockdown. The disease caused by SARS-CoV-2, also known as COVID-19, has an estimated mortality rate of about 2.3%. Some of the common symptoms of this virus infection may include fever, dry cough, and shortness of breath. As of 2020 any vaccine for COVID-19 infection is still to be discovered.

Killer Viruses
Deadly viruses
Top 8 viruses
viruses that can kill you
Hantavirus
Coronavirus
Rotavirus
Informational
Samiran Panda
Lecturer
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