Where does the New Coronavirus Originate

Experts and scholars have different opinions. Dr. Dasak pointed out that the virus may be transmitted to humans from an unknown intermediate host in the South China Seafood Market in Wuhan. But Lacanillo, a professor at Columbia University, believes that he may be directly infected by bats. In addition, Bright of the Waxman Institute of Microbiology said that the possibility of accidental leaks in the laboratory cannot be ruled out.

Hard to find an intermediate host
Acording to Madia reports, at the beginning of the outbreak in December last year, most of the hypothesis was that the virus originated from the South China Seafood Wholesale Market in Wuhan, where many wild animals were allegedly sold illegally. However, the wild animals in the South China Seafood Market had been culled when the first wave of group infections broke out in early January, and the entire market was forcibly closed and disinfected. Therefore, finding an intermediate host for the new coronavirus is even more difficult. But the evidence is insufficient.

“Now it is very certain that the new coronavirus is from bats, but it is not sure which one.” Dr. Dasak, a “virus hunter” who has studied in China for more than 10 years, said that bats may infect a certain farm animal and pass it to humans. He also mentioned By the time, the seafood market in South China not only has a wide variety of animals, but also has animal waste and blood on the ground. Both adults and children live there, making it an excellent environment for virus transmission.

However, a paper in The Needle pointed out that about one-third of the earliest 41 cases had not been to the South China Seafood Market. La Cannello, a professor of microbiology at Columbia University, also believes that “patient zero” may have been infected before going to the market. Because many farmers will go to the bat cave to collect bat feces to fertilize, it may be infected in the process.

Laboratory accident?
In addition, many experts pointed to the possibility of accidental leakage in the laboratory. This statement was once dismissed as a conspiracy theory by WHO Secretary-General Tan Desai, but Ebright, the laboratory director of the Waxman Institute of Microbiology, pointed out that “laboratory accidents” are indeed possible in reality, and there is no conspiracy theory. . In the past, there have been accidents of SARS virus leakage in Singapore and Taiwan.

Shi Zhengli, a researcher at the Wuhan Institute of Virology, Chinese Academy of Sciences, led the team to collect viruses from different bats over the past 10 years to build the largest virus database in Asia. Although the Wuhan Virus Research Institute belongs to the highest level of biological safety (level 4), coronaviruses are always considered to be free of airborne infections, so a full set of isolation clothing and disinfection operations are not required in the laboratory. However, Shi Zhengli once said that the new crown virus did not meet any virus samples collected by the laboratory.

 

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Where does the New Coronavirus Originate - /10

Summary

Experts and scholars have different opinions. Dr. Dasak pointed out that the virus may be transmitted to humans from an unknown intermediate host in the South China Seafood Market in Wuhan.

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