Natural pandemics can be horrific and catch us completely off guard. For example, three years elapsed between the first officially documented US AIDS cases in 1981 and the identification of HIV as its cause. It took another three years to develop and approve the first drug treating HIV. While antiretroviral treatments now allow those living with HIV to manage the disease effectively (that is, if they can afford the treatment), we still lack a promising HIV vaccine.
Yet as ill-equipped as we may be to fight newly emergent natural pathogens, we are even less prepared to cope with engineered pathogens. In the coming decades, it may become possible to create pathogens that fall well outside the range of infectious agents modern medicine has learned to detect, treat, and contain.
Worse yet, malicious actors might build disease-causing microbes with features strategically tailored to thwart existing health security measures. So while advances in the field of synthetic biology will make it easier for us to invent therapeutics and other technologies that can defend us from pandemics, those very same advances may allow state and nonstate actors to design increasingly harmful pathogens.
For example, new gene-synthesis technologies loom large on the horizon, allowing for the automated production of longer DNA sequences from scratch. This will be a boon for basic and applied biomedical research — but it also will simplify the assembly of designer pathogens.
First story
A Chinese scientific paper has suggested careless biosecurity at a disease research laboratory just 280 yards from the market where the outbreak was originally detected was responsible for the Covid-19 Chinese Corona Virus.
Did coronavirus originate in laboratory? Scientists believe killer disease may have begun in research facility 300 yards from Wuhan wet fish market
- Beijing-sponsored South China University of Technology concludes that ‘the killer coronavirus probably originated from a laboratory in Wuhan’
- It points to research on bats and respiratory diseases carried by the animals at the Wuhan Center for Disease Control and the Wuhan Institute of Virology
- WCDC is just 300 yards from the seafood market and is adjacent to the hospital
PUBLISHED: 00:22 AEDT, 17 February 2020 | UPDATED: 03:00 AEDT, 17 February 2020
Chinese scientists believe the deadly coronavirus may have started life in a research facility just 300 yards from the Wuhan fish market.
A new bombshell paper from the Beijing-sponsored South China University of Technology says that the Wuhan Center for Disease Control (WHCDC) could have spawned the contagion in Hubei province.
‘The possible origins of 2019-nCoV coronavirus,’ penned by scholars Botao Xiao and Lei Xiao claims the WHCDC kept disease-ridden animals in laboratories, including 605 bats.
It also mentions that bats – which are linked to coronavirus – once attacked a researcher and ‘blood of bat was on his skin.’
The abstract of the paper.
The possible origins of 2019-nCoV coronavirus
The 2019-nCoV has caused an epidemic of 28,060 laboratory-confirmed infections in human including 564 deaths in China by February 6, 2020. Two descriptions of the virus published on Nature this week indicated that the genome sequences from patients were almost identical to the Bat CoV ZC45 coronavirus. It was critical to study where the pathogen came from and how it passed onto human. An article published on The Lancet reported that 27 of 41 infected patients were found to have contact with the Huanan Seafood Market in Wuhan. We noted two laboratories conducting research on bat coronavirus in Wuhan, one of which was only 280 meters from the seafood market. We briefly examined the histories of the laboratories and proposed that the coronavirus probably originated from a laboratory. Our proposal provided an alternative origin of the coronavirus in addition to natural recombination and intermediate host.
Original link (deleted): https://www.researchgate.net/publication/339070128_The_possible_origins_of_2019-nCoV_coronavirus
Web Archive: https://web.archive.org/web/20200214144447/https://www.researchgate.net/publication/339070128_The_possible_origins_of_2019-nCoV_coronavirus
Web Archive: https://web.archive.org/web/20200214144447/https://www.researchgate.net/publication/339070128_The_possible_origins_of_2019-nCoV_coronavirus
[PDF] The possible origins of 2019-nCoV coronavirus
B Xiao, L Xiao - researchgate.net
The 2019-nCoV coronavirus has caused an epidemic of 28,060 laboratory-confirmed
infections in human including 564 deaths in China by February 6, 2020. Two descriptions of
the virus published on Nature this week indicated that the genome sequences from patients …
infections in human including 564 deaths in China by February 6, 2020. Two descriptions of
the virus published on Nature this week indicated that the genome sequences from patients …
The paper cited above does not go into detail about exactly what the Wuhan laboratory was doing with their infected animals, but careless biosecurity is a plausible explanation for what happened; researchers in constant close contact with infected mammals, obviously not wearing proper protective clothing to prevent injury or contamination, getting scratched and urinated on, not taking proper precautions, would have created plenty of opportunities for cross over and hybridisation between bat and human Corona viruses, and whatever else they were keeping in their cages.
If the claim of careless biosecurity is correct, the emergence of a dangerous hybrid virus capable of infecting humans was always a possibility. Through their carelessness, the virus researchers may have been inadvertently creating and incubating a stream of increasingly dangerous hybrid pathogens, until finally a potential pandemic escaped their laboratory.
report from a scientist at the prestigious South China University of Technology in Guangzhou China. A pre-print published by Botao Xiao and Lei Xiao, titled "The possible origins of 2019-nCoV coronavirus" whose abstract is the following…
The 2019-nCoV has caused an epidemic of 28,060 laboratory-confirmed infections in human including 564 deaths in China by February 6, 2020. Two descriptions of the virus published on Nature this week indicated that the genome sequences from patients were almost identical to the Bat CoV ZC45 coronavirus. It was critical to study where the pathogen came from and how it passed onto human. An article published on The Lancet reported that 27 of 41 infected patients were found to have contact with the Huanan Seafood Market in Wuhan. We noted two laboratories conducting research on bat coronavirus in Wuhan, one of which was only 280 meters from the seafood market. We briefly examined the histories of the laboratories and proposed that the coronavirus probably originated from a laboratory. Our proposal provided an alternative origin of the coronavirus in addition to natural recombination and intermediate host.
… and an especially ominous conclusion:
In summary, somebody was entangled with the evolution of 2019-nCoV coronavirus. In addition to origins of natural recombination and intermediate host, the killer coronavirus probably originated from a laboratory in Wuhan.
Who is Botao and should anyone listen to him? Well, yes: this is what we find about the research group of the Harvard post-doc:
The Xiao group study mainly in the fields of cellular and molecular biomechanics, single molecule biophysics and engineering. Current research areas are: protein-ligand interactions, DNA and RNA assembly, high-throughput nanometer measurements and manipulation, mathematical modeling and quantitative analysis. The experimental techniques include: magnetic tweezers, optical tweezers, biomembrane force probe, fluorescent microscopy, genetic engineering, and chromatography. An project example is using high-throughput single molecule techniques to study the modulation of protein drugs on interactions of integrins and their ligands such as TGF-beta. We also study von Willebrand Factor and glycoproteins on platelets. We collaborate with a number of well-known universities and institutions, and a few enterprises. Our research will be of relevance for the prevention and treatment of cancer, immune and cardiovascular diseases.
But what is far more interesting, and important, is that the paper was supported by China's National Natural Science Foundation, which means that the paper would likely never see the light of day if someone in Beijing did not stand to gain politically by endorsing the contrarian theory that a Wuhan biolab was indeed the source of the infection.
Which begs the question: is China's political elite set to change the narrative it has been spinning since day one about the origins of the coronavirus, and in order to appease an increasingly angry population, points the finger to one or more scientists at the Wuhan Center for Disease Control and Prevention and/or Wuhan Institute of Virology. Perhaps even the same scientists we highlighted two weeks ago, and which led to our twitter ban?
And until we eagerly await the answer, here is the gist of Botao's paper, which we repost here just in case it does disappear after all (ResearchGate link here):
The possible origins of 2019-nCoV coronavirusBotao Xiao1,2* and Lei Xiao31 Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China2 School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China3 Tian You Hospital, Wuhan University of Science and Technology, Wuhan 430064, ChinaCorresponding author: xiaob@scut.edu.cnTel / Fax: 86-20-3938-0631The 2019-nCoV coronavirus has caused an epidemic of 28,060 laboratory-confirmed infections in human including 564 deaths in China by February 6, 2020. Two descriptions of the virus published on Nature this week indicated that the genome sequences from patients were 96% or 89% identical to the Bat CoV ZC45 coronavirus originally found in Rhinolophus affinis 1,2. It was critical to study where the pathogen came from and how it passed onto human.An article published on The Lancet reported that 41 people in Wuhan were found to have the acute respiratory syndrome and 27 of them had contact with Huanan Seafood Market 3. The 2019-nCoV was found in 33 out of 585 samples collected in the market after the outbreak. The market was suspected to be the origin of the epidemic, and was shut down according to the rule of quarantine the source during an epidemic.The bats carrying CoV ZC45 were originally found in Yunnan or Zhejiang province, both of which were more than 900 kilometers away from the seafood market. Bats were normally found to live in caves and trees. But the seafood market is in a densely-populated district of Wuhan, a metropolitan of ~15 million people. The probability was very low for the bats to fly to the market. According to municipal reports and the testimonies of 31 residents and 28 visitors, the bat was never a food source in the city, and no bat was traded in the market. There was possible natural recombination or intermediate host of the coronavirus, yet little proof has been reported.Was there any other possible pathway? We screened the area around the seafood market and identified two laboratories conducting research on bat coronavirus. Within ~280 meters from the market, there was the Wuhan Center for Disease Control & Prevention (WHCDC) (Figure 1, from Baidu and Google maps).WHCDC hosted animals in laboratories for research purpose, one of which was specialized in pathogens collection and identification 4- 6. In one of their studies, 155 bats including Rhinolophus affinis were captured in Hubei province, and other 450 bats were captured in Zhejiang province 4. The expert in collection was noted in the Author Contributions (JHT). Moreover, he was broadcasted for collecting viruses on nation-wide newspapers and websites in 2017 and 2019 7,8. He described that he was once attacked by bats and the blood of a bat shot on his skin. He knew the extreme danger of the infection so he quarantined himself for 14 days 7. In another accident, he quarantined himself again because bats peed on him. He was once thrilled for capturing a bat carrying a live tick8.Surgery was performed on the caged animals and the tissue samples were collected for DNA and RNA extraction and sequencing 4, 5. The tissue samples and contaminated trashes were source of pathogens. They were only ~280 meters from the seafood market. The WHCDC was also adjacent to the Union Hospital (Figure 1, bottom) where the first group of doctors were infected during this epidemic. It is plausible that the virus leaked around and some of them contaminated the initial patients in this epidemic, though solid proofs are needed in future study.The second laboratory was ~12 kilometers from the seafood market and belonged to Wuhan Institute of Virology, Chinese Academy of Sciences 1, 9, 10. This laboratory reported that the Chinese horseshoe bats were natural reservoirs for the severe acute respiratory syndrome coronavirus (SARS-CoV) which caused the 2002-3 pandemic 9. The principle investigator participated in a project which generated a chimeric virus using the SARS-CoV reverse genetics system, and reported the potential for human emergence 10. A direct speculation was that SARS-CoV or its derivative might leak from the laboratory.In summary, somebody was entangled with the evolution of 2019-nCoV coronavirus. In addition to origins of natural recombination and intermediate host, the killer coronavirus probably originated from a laboratory in Wuhan. Safety level may need to be reinforced in high risk biohazardous laboratories. Regulations may be taken to relocate these laboratories far away from city center and other densely populated places.AcknowledgementsThis work is supported by the National Natural Science Foundation of China (11772133, 11372116).Declaration of interestsAll authors declare no competing interests.References1. Zhou P, Yang X-L, Wang X-G, et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature 2020. https://doi.org/10.1038/s41586-020-2012-7.2. Wu F, Zhao S, Yu B, et al. A new coronavirus associated with human respiratory disease in China. Nature 2020. https://doi.org/10.1038/s41586-020-2008-3.3. Huang C, Wang Y, Li X, et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. The Lancet 2019. https://doi.org/10.1016/S0140- 6736(20)30183-5.4. Guo WP, Lin XD, Wang W, et al. Phylogeny and origins of hantaviruses harbored by bats, insectivores, and rodents. PLoS pathogens 2013; 9(2): e1003159.5. Lu M, Tian JH, Yu B, Guo WP, Holmes EC, Zhang YZ. Extensive diversity of rickettsiales bacteria in ticks from Wuhan, China. Ticks and tick-borne diseases 2017; 8(4): 574-80.6. Shi M, Lin XD, Chen X, et al. The evolutionary history of vertebrate RNA viruses. Nature 2018; 556(7700): 197-202.7. Tao P. Expert in Wuhan collected ten thousands animals: capture bats in mountain at night. Changjiang Times 2017.8. Li QX, Zhanyao. Playing with elephant dung, fishing for sea bottom mud: the work that will change China's future. thepaper 2019.9. Ge XY, Li JL, Yang XL, et al. Isolation and characterization of a bat SARS-like coronavirus that uses the ACE2 receptor. Nature 2013; 503(7477): 535-8.10. Menachery VD, Yount BL, Jr., Debbink K, et al. A SARS-like cluster of circulating bat coronaviruses shows potential for human emergence. Nature medicine 2015; 21(12): 1508-13.
Second story
Canada’s national police force is investigating “possible policy breaches” after researchers were escorted from a lab at Canada’s National Microbiology Laboratory in Winnipeg, CBC News reported earlier this week (July 14). Prominent virologist Xiangguo Qiu, her colleague and husband Keding Cheng, and an unknown number of her students from China were removed from the lab on July 5.
The Public Health Agency of Canada (PHAC) said that it advised the Royal Canadian Mounted Police (RCMP) about “possible policy breaches” in May, according to Reuters. The University of Manitoba, where Qiu held a non-salaried adjunct faculty position, cut ties with Qiu as a result of the RCMP investigation, according to CBC News.
Qiu had made regular trips to Beijing, and recent requests for trips were denied, according to the CBC. Sources also told the outlet that IT specialists entered her office after hours and replaced her computer several months ago.
Qiu was part of the team that developed ZMapp, an experimental treatment for Ebola used during the 2014 outbreak in West Africa. Heinz Feldmann, the former head of the National Microbiology Lab’s special pathogens program where Qiu worked, tells the National Post, “I still hope that this is a big misunderstanding. She is a great researcher, she has been a great collaborator, she has been a great interacter in the field.” A conference bio says she joined Cancer Care Manitoba in 1997 and NML in 2003, according to the National Post. The facility where she worked is the only biosafety level 4 lab in Canada, meaning that it is equipped to work with the most dangerous pathogens.
PHAC and the RCMP refused to comment on Qiu’s removal from NML, according to Reuters. “There is no employee from the NML under arrest or confined to their home,” Eric Morrisette, spokesman for the PHAC, tells Reuters. “We can assure Canadians that there is no risk to the public and that the work of the NML continues in support of the health and safety of all Canadians.”
Chia-Yi Hou is an intern at The Scientist. Email her at chou@the-scientist.com.
This story was published on Oct. 3, 2019.
A Canadian government scientist at the National Microbiology Lab in Winnipeg made at least five trips to China in 2017-18, including one to train scientists and technicians at China's newly certified Level 4 lab, which does research with the most deadly pathogens, according to travel documents obtained by CBC News.
Xiangguo Qiu — who was escorted out of the Winnipeg lab in July amid an RCMP investigation into what's being described by Public Health Agency of Canada as a possible "policy breach" — was invited to go to the Wuhan National Biosafety Laboratory of the Chinese Academy of Sciences twice a year for two years, for up to two weeks each time.
"This will be third-party funded, and therefore no cost to [the Public Health Agency of Canada]," say the documents, obtained through access to information requests. The identity of the third-party was redacted.
During a Sept. 19-30, 2017, trip, she also met with collaborators in Beijing, the documents say, but their names have also been blacked out.
Qiu, her husband Keding Cheng and her students from China were removed on July 5 from Canada's only Level 4 lab — one equipped to work with the most serious and deadly human and animal diseases, such as Ebola. Security access for the couple and the Chinese students was revoked, sources who work at the lab previously told CBC News.
The CCP regards the intellectual property theft as a critical strategy for its rise becoming a great nation and its invasion of the world. Many Chinese researchers are either the CCP’s spies or lacking moral consciousness. Some of them cannot resist the temptation of huge benefits provided by the CCP and some of them feel obligatory with the calling of patriotism. They use the convenience of their work and research in the West to steal technologies and stealthily, provide them to the CCP. In this incidence, two Chinese-Canadian scientists secretly stole biological viral samples, which provided valuable data and samples for viral research, to the CCP, and should be hold responsible for the outbreak of coronal virus in Wuhan.
We have some possibly wild speculation. link
Chinese economic spying has been rampant. I find the possibility that China stole virus material to be at least somewhat credible. I really do not understand the web sites that say it couldn’t have happened. Read more: https://gnews.org/92280/
etc, etc.
You want more?
WUHAN VIROLOGY INSTITUTE, CHINESE BIOLOGICAL WARFARE AND CHINESE-CANADIAN SPY
Our conclusion
Beyond developing new global standards and practices, we need to adopt more flexible countermeasures to face off the threat of bioengineered pathogens. As noted in a recent CHS report, “One of the biggest challenges in outbreak response, particularly for emerging infectious diseases, is the availability of reliable diagnostic assays that can quickly and accurately determine infection status.”
Diagnostics based on cutting-edge genome sequencing methods could provide detailed information about all the viruses and bacteria present in a blood sample, including even completely novel pathogens. Meanwhile, as genome sequencing technology becomes less expensive, it could be more widely applied in clinics to provide unprecedented real-time insights into genetic diseases and cancer progression.
We also need to invest more in developing antivirals that hit a wider range of targets. Such broad-spectrum drugs may stand a better chance of slowing the proliferation of an engineered bug than treatments specific to single known pathogens.
And we should also develop “platform” technologies that allow rapid vaccine development. Currently, the process of designing, testing, and manufacturing a vaccine to prevent the spread of a new pathogen takes years. Ideally, we could immunize all at-risk individuals within months of identifying the pathogen. Accelerating vaccine development will require us to innovate new and likely unconventional technologies, such as vectored immunoprophylaxis or nucleic acid vaccines.
Even as we pursue and accelerate such research, we should also be mindful of the possibility of self-inflicted wounds. To avert a terrible accident, the international biomedical community should establish firmer cultural guardrails on the research into pathogens.
Currently, career advancement, financial gain, and raw curiosity motivate biologists at all levels to push the envelope, and we all stand to gain from their efforts. However, these same incentives can sometimes lead researchers to take substantial and perhaps unjustified risks, such as evolving dangerous strains of influenza to be more contagious or publishing instructions for cultivating a close cousin of the smallpox virus. It’s important for biologists to do their part to promote a culture in which this adventurous intellectual spirit is tempered by caution and humility.
Underlying the prescriptions above is the need to approach the problem with the sense of urgency it warrants. As our biotechnological capabilities grow, so too will the threat of engineered pathogens. An engineered pandemic won’t announce itself with a towering mushroom cloud, but the suffering of the individuals it touches will be no less real.
Zeljko Serdar, CCRES
Postoji li istraživački laboratorij BSL-4 u Wuhanu?
ReplyDeleteDa, u Wuhanu postoji Institut za virologiju i u njemu se nalazi laboratorij biosigurnosne razine 4. Institut za virologiju u Wuhanu djeluje od 1956. godine pod pokroviteljstvom Kineske akademije znanosti, koja je 2003. godine odobrila i stvaranje BSL-4 laboratorija. Taj je laboratorij dovršen 2015. godine po cijeni od 44 milijuna dolara u suradnji s francuskim znanstvenicima. Nadalje, mnogi kineski znanstvenici iz wuhanskog instituta prošli su obuku u francuskom laboratoriju VirPath u Lyonu (BSL-4). Čim se na početku epidemije počelo krivce tražiti među njima, znanstvenici iz Instituta za virologiju u Wuhanu odlučno su ustvrdili kako ne postoji povezanost između epidemije Covida-19 i njihovog laboratorija BSL-4.
Vodeći znanstveni časopis Nature objavio je članak o tome te zaključio da nema dokaza za priče da je taj Institut imao ulogu u epidemiji koronavirusa krajem prošle godine. Nadalje, ugledni američki znanstvenici također surađuju s kolegama iz Wuhana. Primjerice, Jim LeDuc, voditelj Nacionalnog laboratorija Galveston (također biosigurnosne razine 4) i njegovi suradnici šest godina surađuju s kineskim kolegama te su ih savjetovali oko gradnje i sigurnosnih mjera. - Mogu reći da je laboratorij u Wuhanu ekvivalentan bilo kojem laboratoriju ovdje u SAD-u i Europi - izjavio je LeDuc za portal Vox. Slično smatra i Gerald Keusch.
- Ne mislim da postoji vjerojatnost da je laboratorij u Wuhanu manje siguran u pogledu protokola od bilo kojeg laboratorija u SAD-u. Uistinu je dobar, iako ništa nije savršeno - ustvrdio je Keusch. On smatra da su tvrdnje da je SARS-CoV-2 stvoren kao biološko oružje posve deplasirane jer postoje puno smrtonosniji virusi od njega. Primjerice, virusi koji uzrokuju hemoragijske groznice, Ebola, Marburg i Lassa, imaju smrtnost od 50 do 80 posto, dok SARS-CoV-2 trenutno ima stopu smrtnosti oko tri posto.
Kako znamo da SARS-CoV-2 nije kreiran u laboratoriju?
ReplyDeleteVirolozi ističu da je oko novog koronavirusa mnogo nepoznanica, ali da već sada imaju dovoljno dokaza da je riječ o novom virusu koji dolazi iz prirode. Ubrzo nakon što je kineska vlada priznala da je krajem prosinca u Wuhanu došlo do epidemije tajanstvenog novog virusa, znanstvenici diljem svijeta su se utrkivali u sekvenciranju njegova genoma. Sredinom siječnja sekvencirali su ga i podijelili sa Svjetskom zdravstvenom organizacijom (WHO).
Pozivajući se na analize genoma virusa koje su napravljene u brojnim svjetskim laboratorijima, velika skupina uglednih svjetskih znanstvenika nedavno je u medicinskom časopisu The Lancet potvrdila da virus potječe iz divljine, baš kao i mnogi novi virusi koji su se posljednjih desetljeća pojavili u ljudskoj populaciji. “Brzoj, otvorenoj i transparentnoj razmjeni podataka o ovoj epidemiji sada prijete glasine i dezinformacije o nastanku virusa. Oštro osuđujemo teorije zavjere koje sugeriraju da Covid-19 nema prirodno porijeklo. Znanstvenici iz više zemalja objavili su i analizirali genome virusa SARS-CoV-2 i nadmoćno zaključuju da je ovaj koronavirus nastao u divljini”, navodi se u priopćenju uglednih svjetskih znanstvenika u Lancetu.
Koja je životinja izvor novog koronavirusa?
Ekspertna skupina Svjetske zdravstvene organizacije (WHO) na čelu s američkim epidemiologom Bruceom Aylwardom posjetila je prošli mjesec Peking, Wuhan, Shenzhen, Guangzhou i Chengdu te objavila detaljan izvještaj o epidemiji Covida-19 u Kini. Prema tom izvještaju, sekvenca RNK novog virusa (SARS-CoV-2) se 96 posto poklapa s onom poznatog koronavirusa voćnih šišmiša i 86-92 posto s koronavirusom izoliranim iz ljuskavca. Stoga je prijenos mutiranog virusa sa životinja na ljude najvjerojatniji uzrok pojave nove bolesti.
Mnogi znanstvenici smatraju da je ključnu ulogu u širenju virusa imala velika tržnica Huanan u Wuhanu, gdje se prodaju morski plodovi i različite (žive) životinje. Znanstvenica Tanja Stadler sa Švicarskog federalnog tehnološkog instituta (ETH) na osnovi analize genoma virusa SARS-CoV-2 tvrdi da se virus počeo prenositi među ljudima u Kini u prvoj polovici studenoga 2019. godine. - Raširena hipoteza da je prva osoba zaražena na tržnici u Wuhanu u studenome još je uvijek uvjerljiva. Naši podaci isključuju scenarij prema kome je virus prije toga duže vrijeme cirkulirao među ljudima - istaknula je Tanja Stadler.
I Jim LeDuc se slaže s hipotezom da je tržnica Huanan igrala važnu ulogu kod prelaska virusa sa životinja na ljude. - To je savršeno uvjerljivo i logično objašnjenje. Virus postoji u prirodi te preskače vrste mijenjajući domaćine. Naposljetku, ustanovi da mu se kao domaćini sviđaju i ljudi - rekao je LeDuc, naglasivši da smo sličan scenarij vidjeli kod SARS-a (Teški akutni respiratorni sindrom). SARS se pojavio 2003. godine u kineskoj pokrajini Guangdong te se tijekom nekoliko tjedana proširio u 37 zemalja svijeta i odnio živote 800 od 8000 zaraženih osoba. Prirodni rezervoar virusa SARS-a, koji je “rođak” novog koronavirusa, je voćni šišmiš, dok su kao posrednici između njih i ljudi bile cibetke, jedna vrsta divljih mački koje žive u Kini.