However the workforce of worldwide consultants did agree the virus seemingly jumped from bats to an unknown animal species, sooner than being transmitted to individuals.
It moreover concluded that it was “extraordinarily unlikely” that the virus acquired right here from a high-security lab inside the central metropolis of Wuhan, displaying to quash quite a few theories linking city’s virology institute to the outbreak.
Enormous world pressure and scrutiny trailed the workforce all through its probe in China, which mission member Peter Daszak described as working “flat out underneath essentially the most politically charged setting doable.”
After a mission that lasted nearly a month, listed below are 5 points we nonetheless have no idea regarding the virus’ origin:
The animal provide Consultants talked about exams have been completed on tens of 1000’s of samples from wild, farmed and residential animals all through China — nonetheless none of them contained the SARS-CoV-2 virus that causes Covid-19.
Nonetheless, Dutch virologist and WHO workforce member Marion Koopmans talked about that species further weak to the virus — along with bamboo rats, badgers and rabbits — have been provided at Wuhan’s Huanan market, the placement of an early virus cluster, and will very effectively be an entry stage for trace-back investigations.
British zoologist Daszak moreover talked about after the briefing that new bat viruses present in Thailand and Cambodia, “shifts our focus to Southeast Asia”.
“I feel someday we’ll discover that (reservoir), it’d take a while… however it is going to be on the market unquestionably,” he instructed reporters.
Uncooked data Concern has been expressed regarding the scientists’ entry to data in China, amid accusations that Beijing downplayed the preliminary severity of the outbreak in Wuhan in late 2019.
Danish epidemiologist and workforce member Thea Kolsen Fischer talked about after the briefing that the WHO workforce weren’t given raw data, nonetheless in its place relied on earlier analysis by Chinese language scientists.
Typically, she talked about, it is perhaps odd for outsiders to get right of entry to “aggregated information”.
WHO workforce members talked about they’ve been granted full entry to the web sites and other people they requested to go to.
Chilly chain transmission Beijing has repeatedly floated the hypothesis that the virus was dropped at China by packaging on chilly chain merchandise like imported frozen seafood, linking these to present dwelling outbreaks.
WHO emergencies chief Mike Ryan had beforehand talked about that there is “no proof that meals or the meals chain is collaborating in transmission”.
However in China the WHO mission appeared to supply some weight to the hypothesis.
The high of the Chinese language facet of the mission, Liang Wannian, talked about the virus can journey prolonged distances on the ground of chilly chain merchandise, and environmental samples from Huanan market — which provided frozen wild animals and seafood — confirmed “widespread contamination” of the virus.
However WHO workforce lead Peter Ben Embarek cautioned that it is nonetheless unclear whether or not or not the virus can transmit to individuals from contaminated chilly chain surfaces.
Origin exterior China? Beijing has repeatedly referred to as for the WHO to launch an origin tracing mission inside the US, and worldwide ministry officers have drawn consideration to conspiracy theories about virus leaks from an American navy germ evaluation lab.
Desperate to deflect worldwide criticism over its preliminary coping with of the outbreak, China has moreover amplified analysis suggesting some Covid-19 situations emerged in Italy and totally different worldwide areas in late 2019.
However in releasing the report’s conclusions, Koopmans talked about these analysis “don’t present full proof of earlier circulation” exterior China in early December.
Nonetheless, she conceded that consultants “ought to actually go and seek for proof of earlier circulation.”
What subsequent? Koopmans talked about farms supplying wild animals to Wuhan’s Huanan market deserve extra evaluation.
Along with sampling further wild animal reservoirs — significantly bats — in and outdoor China, Ben Embarek urged re-testing samples using “new approaches” to blood exams and trying to find further early situations that went undetected in Wuhan in December 2019.
China, within the meantime, is raring that the next stage of the virus origin investigation takes place overseas.