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But "identifying the first infected patient is of great epidemiological interest as it changes dramatically our knowledge regarding SARS-COV-2 and its spreading in the country", he and his co-researchers wrote.

But Bryan warned, "it would be irresponsible for us to say that we feel the summer will totally kill the virus".

Brent crude oil futures, the benchmark for world prices and a proxy for future economic activity, edged up 0.54 percent to .97 a barrel. But futures for West Texas Intermediate crude declined 10.82 percent to .72 a barrel, the lowest price since December 2001. At this price, many hydraulic frackers can't operate profitably.

But China is expected to catch up on both relevant technologies and overtake the United States in a decade, Rao said.

Brar sees the BRI as making a great contribution to the creation of a multipolar world, one in which people across the world can embark on a life "that isn't controlled by imperialism".