The top court made this observation while refusing to entertain a petition seeking direction to set up an international taks force for finding scientific answeres about the Delta variant's origin.
China firmly objected to the allegation by Washington that Beijing stalled international probe and resisted in sharing information about the coronavirus.
The United States, however, does not believe Chinese officials had foreknowledge of the virus before the initial outbreak of the pandemic that has now claimed 4.5 million lives.
The report by Representative Michael McCaul, a top Republican at the House Foreign Affairs Committee, is based on open-source material.
The latest report follows suspicions about the origins of the coronavirus, with many believing that it escaped from a lab in the Chinese city of Wuhan, where the first cases were reported in 2019.
Numerous experts, some with strong ties to WHO, say that political tensions between the U.S. and China make it impossible for an investigation by the agency to find credible answers.
Experts say speculation based on circumstantial evidence should not distract us from fighting coronavirus, though Wuhan lab-leak theory gains momentum
China is coming under increasing pressure over probe into the origins of the COVID-19, even as scientists are demanding more clarity.
'Covid has no credible natural ancestor': Explosive study claims Chinese scientists created virus in lab
The new research claims that scientists took a natural coronavirus "backbone" found in Chinese cave bats and spliced onto it a new "spike", turning it into the deadly and highly transmissible Covid-19
External Affairs Ministry spokesperson Arindam Bagchi said the follow up of the WHO report and further studies deserve the understanding and cooperation of all.
Across the world, there has been criticism and questions about culpability of governments in handling the crisis. But oddly, few questions are raised about the origin of the virus
The report said transmission of the virus from bats to humans through another animal is the most likely scenario and that a lab leak is “extremely unlikely.”
The research, published in the journal Science, used molecular dating tools and epidemiological simulations to date the emergence of the virus to as early as October 2019.