US urges WHO to carry out second phase of coronavirus origin study in China
- The initial investigation was ‘insufficient and inconclusive’, the US says, calling for independent experts to be given full access to original data and samples
- US intelligence agencies are pursuing rival theories about the origins of the pandemic, potentially including the possibility of a laboratory accident in China

The United States called on Thursday for the World Health Organization to carry out a second phase of its investigation into the origins of the coronavirus, with independent experts given full access to original data and samples in China.
A WHO-led team that spent four weeks in and around Wuhan in January and February with Chinese researchers said in a report in March that the virus had probably been transmitted from bats to humans through another animal, and that “introduction through a laboratory incident was considered to be an extremely unlikely pathway”.
The initial WHO study was “insufficient and inconclusive”, the US mission to the UN in Geneva said in a statement on Thursday, calling for what it called a timely, transparent and evidence-based second probe to be conducted, including in China.

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“It is critical that China provides independent experts full access to complete, original data and samples relevant to understanding the source of the virus and the early stages of the pandemic,” the US statement said.