China has urged the WHO to do an origin-tracing study of the coronavirus in the United States after the WHO's remarks on the origin of coronavirus in China's Wuhan city. 

Last week, Foreign Ministry spokesman Wang Wenbin said,  " we hope  that following China's example, the US side will act in a positive, science-based and cooperative manner on the origin-tracing issue (and) invite WHO experts in for an origin-tracing study."

The chief epidemiologist at China's Center for Disease Control Zeng Guang also said the US should now be "the focus" of global efforts to trace the virus. This comes after a team of WHO experts, who investigated into the origin of the corona in Wuhan, had said that there is no evidence of coronavirus circulation in any animal species in China.

During a press conference, Peter Ben Embarek, the head of the WHO mission in Wuhan, had stated four hypotheses on how the virus spread but reiterated that "laboratory incident hypothesis is extremely unlikely to explain the introduction of the virus into the human population". The WHO expert said,  "Our initial findings suggest that introduction through an intermediary host species is the most likely passway and one that will require more studies and more specific targeted research ... The findings suggest that a laboratory incident hypothesis is extremely unlikely to explain the introduction of the virus into the human population."

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