Marburg virus This virus was first discovered in Marburg, Germany in 1967. This is a deadly virus, similar to Ebola virus. The mortality rate is 25%- 100%. That sounds horrific. There is no vaccine or cure at present. Children are susceptible to infection. In Africa, 75% of infected people are children under 5 years old.
The key to whether prion humans will become zombies. Prion is a special kind of protein, which controls the central nervous system of organisms, because it has the characteristics of virus after being attacked. Once prions break out in humans, humans will become zombies without reason and emotion. 1967, the first zombie deer was reported in the United States. Scientists' understanding of prions is related to primitive tribes in the South Pacific island. Through research, it is found that prion is a viral inanimate object, and it is impossible for human beings to develop related drugs against it. In this way, once the prion breaks out, it can't be controlled.
Smallpox virus. After smallpox virus infection, there will be serious symptoms of toxic blood. The incubation period is 7- 17 days, and the mortality rate is 30%. At the earliest time, it may be because of the contact between people and wild animals that viruses that are harmless to animals were transmitted to humans. According to statistics, about 300-500 million people died of smallpox virus in the 20th century. It is the only extinct virus at present.
Ebola virus is called "the eraser of human destiny". The biosafety level is Grade IV, and the virus incubation period can reach 2-2 1 day, and generally it is 5 5- 10/day. It was first discovered in 1976, along the Ebola River in Congo. Therefore, it was named Ebola virus. 20 13, 12 Ebola outbreak in west Africa. As of March 20 15, 23,900 people have been infected and 9,800 people have died in * *, with a mortality rate of over 40%. In some parts of Africa, the death rate even exceeds 90%.
Rabies virus Rabies virus is a virus from animals, and many animals may be rabies virus carriers. According to statistics, nearly 55,000 people die of rabies every year. Once a person is bitten by an animal carrying rabies virus, it is easy to get infected with the virus. The incubation period is 1-3 months. The precursor period generally lasts 2- 10 days; The exciting period generally lasts 1-3 days; Paralysis usually lasts 6- 18 hours. In 2007, the number of rabies deaths in China reached 3,300, and in 2020 it has dropped to 17. The mortality rate after infection can reach 100%. Now the state forces domestic pets to get rabies vaccine.
Hiv. HIV is an acquired immunodeficiency syndrome with an average incubation period of 7- 10 years. Can invade the human immune system, and the mortality rate is almost 100%. HIV is a virus that can attack the human immune system. It takes CD4T lymphocytes, the most important cells in human immune system, as its main target, and destroys them in large quantities, making human body lose its immune function. 198 1 was first discovered in America. At present, there are four known HIV, all from chimpanzees and gorillas in Cameroon. At present, there are no effective therapeutic drugs.
Novel coronavirus. According to the data released by WHO, the average mortality rate of SARS patients is about 9.6%. 1937 coronavirus was isolated from chicken for the first time. The chief culprit of today's SARS epidemic comes from the coronavirus family. The first two papers on the genome sequence of SARS virus were published in the American magazine Science, which confirmed that SARS virus is a brand-new coronavirus.
At present, scientific research has proved that 78% of infectious diseases discovered by human beings today are related to or come from wild animals. Scientists call for keeping as few wild animals as possible, let alone eating them.