The Chinese Academy of Sciences and others have found the origin of the deadly pig virus

a study by the Wuhan
Virus Research Institute of the Chinese Academy of Sciences and others published online April 5, researchers found that the deadly disease that killed more than 24,000 pigs in China between 2016 and 2017 was a new type of coronavirus that originated in bats.
Researchers from the Institute of Microbiology epidemiology of the Institute of Military Medicine of the Wuhan Institute of Viruses of the Chinese Academy of Sciences, the Institute of Microbiology of the Military Academy of Sciences, the Institute of New Infectious Diseases of duke-Singapore National University School of Medicine in Singapore and the American Ecological Union tested pig samples for known pig diarrhea-related viruses such as pig-epidemic diarrhea virus and infectious gastroenteritis virus.
at the peak of the outbreak, however, all viral tests were negative, indicating that the disease was a new disease. High-flung sequencing results, virus isolation and infection experiments on intestinal samples confirmed that the disease's pathogen was a coronavirus, which researchers named the pig acute diarrhea syndrome coronavirus, or SADS coronavirus for short.
team conducted SADS coronavirus-specific tests on 591 bat samples collected in Guangdong from 2013 to 2016, with a total of 58 positive results, mostly from chrysanthemum bats. Among them, a coronavirus found in a bat cave near the outbreak pig farm was 98.48 percent consistent with the whole genome sequence of the SADS virus.
is alarmingly similar to the severe acute respiratory syndrome (SARS) outbreak in 2002-2003. For example, both occur in Guangdong and are caused by the new coronavirus, which is caused by chrysanthemum manta rays, which also indicates the particularity of southern China as a hot spot for emerging diseases.
" bats are natural storage hosts for multiple coronavirus species. "The discovery and traceability of SADS coronavirus confirms that certain coronavirus carried by bats can spread across species to livestock and cause serious diseases," said Shi Zhengli, one of the authors of the paper and a researcher at the Wuhan Virus Institute of the Chinese Academy of Sciences. However
Shi Zhengli said, based on serological findings of pig farm staff who have close contact with sick pigs, there is no evidence that SADS coronavirus can further transsethylally infect people.
researchers stressed that the continuous surveillance of bats of coronavirus, the detection and identification of potential threats to human and animal health bat coronavirus, for the prevention and control of new infectious diseases, to ensure the safety of livestock production is of great significance.
it is understood that at the end of October 2016, a piglet death disease broke out in a pig farm in Qingyuan, Guangdong Province, with the incidence of piglets manifesting it as severe acute diarrhea, vomiting, rapid weight loss, and the mortality rate of piglets under 5 days of age was as high as 90%. Three other pig farms were subsequently affected. As of May 2017, 24,693 piglets had died. (Source: Science Network Ding Jia)