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5 Most Dangerous Virus in Human History | Basic Pictures

March 10, 2020


The virus that causes Severe Acute Respiratory Syndrome first appeared in 2002 in the Guangdong province of southern China The SARS virus is spread in small droplets of saliva coughed or sneezed into the air by an infected person SARS can also be spread indirectly if an infected person touches surfaces such as door handles with unwashed hands SARS has flu-like symptoms that usually begin 2 to 7 days after infection The symptoms of SARS include fever, extreme tiredness, headaches, chills and muscle pain After these symptoms, the infection will begin to affect your lungs and respiratory system There’s currently no cure for SARS, but research to find a vaccine is ongoing HIV is a virus that damages the immune system which makes the body is more likely to get various types of infections and cancers Scientists now say that the simian immunodeficiency virus (SIV) in chimpanzees, which is believed to have been transmitted to humans to become HIV It was a product of separate viruses jumping from different monkey species into chimps, where they recombined to form a hybrid virus Without treatment, a person with HIV is likely to develop a serious condition called AIDS At that point, the immune system is too weak to fight off other diseases and infections An estimated 32 million people have died from HIV since the disease was first recognized in the early 1980s HIV is a lifelong condition and currently there is no cure, although many scientists are working to find one Middle East respiratory syndrome (MERS) is a viral respiratory disease caused by a novel coronavirus that was first identified in Saudi Arabia in 2012 The disease originated in bats which then infected camels before passing into humans As a general precaution, anyone visiting farms, markets, barns, or other places where dromedary camels And other animals are present should practice general hygiene measures Typical MERS symptoms include fever, cough and shortness of breath The virus does not seem to pass easily from person to person unless there is close contact Approximately 35% of patients with MERS have died, but this may be an overestimate of the true mortality rate As with SARS, MERS virus has no approved treatments or vaccine so far Marburg virus was first recognized in 1967, when outbreaks of hemorrhagic fever occurred simultaneously in laboratories in Marburg In 1967, a group of lab workers in Germany and Serbiacontracted a new type of hemorrhagic fever Virus came from some African green monkeys that had been imported for research and development of polio vaccines It spread through close human-to-human contact, symptoms start with a headache, fever, and a rash on the trunk Which would then progress to multiple organ failure and massive internal bleeding Marburg typically appears in sporadic outbreaks throughout Africa, laboratory confirmed cases have been reported There is no cure, and the latest cases were reported out of Uganda at the end of 2012 An American tourist who had explored a Ugandan cave full of fruit bats known to be reservoirs of the virus contracted it The first known Ebola outbreaks in humans struck simultaneously in the Republic of the Sudan and the Democratic Republic of Congo in 1976 Ebola is spread through contact with blood or other body fluids, or tissue from infected people or animals The outbreak underway in West Africa began in early 2014, and is the largest and most complex outbreak of the disease to date The deadly virus is named after the Ebola River in the Democratic Republic of the Congo where it was first reported The virus could still spread even though the patient has passed away Therefore, safe burials critical to achieving zero infections and stop the virus from spreading through corpse Symptoms of Ebola virus can be sudden, and include fever, fatigue, muscle pain, headache, sore throat, vomiting, diarrhea, rash, impaired kidney and liver function Fortunately, a concerted research effort to develop a vaccine has been underway for some time

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