A strain of COVID-19 that has tainted in excess of 300 individuals in Beijing since early June could have begun in South or Southeast Asia, as indicated by an investigation by Harvard University scientists.

The flare-up in Beijing has raised worries about China's helplessness to a "second wave" of contaminations. The infection found in Beijing cases is an imported strain of COVID-19, as indicated by the China Center for Disease Control and Prevention.

The Harvard study, distributed on the preprint site medRxiv.org on Tuesday and which has still to be peer-explored, took three of the SARS-CoV-2 genome groupings gathered in Beijing a month ago and contrasted them with 7,643 examples around the world.

The three genomes demonstrated the best likeness to cases in Europe from February to May, and to cases in South and Southeast Asia from May to June.

They were additionally like few diseases found in China in March, recommending the strain could have shown up first in China and afterward came back to the nation three months after the fact, the creators said.

"As the latest cases in these branches are only from South(east) Asia, this could recommend that the new cases in Beijing were re-presented by transmissions from South(east) Asia," they composed.

The episode followed to Beijing's gigantic Xinfadi discount advertise on June 11 had contaminated 329 individuals before the finish of Wednesday.

Isolate limitations and enormous scope testing of occupants started not long after the principal cases were recognized, and China likewise required all shipments of imported meat to be tried for COVID-19 preceding they could leave its ports.

The SARS-CoV-2 infection was accepted to have begun in a market in the focal Chinese city of Wuhan in December a year ago and has now tainted in excess of 10 million individuals and slaughtered in excess of 500,000 around the world.

In any case, a few investigations propose it could have been coursing a lot before in the wake of intersection the species hindrance from horseshoe bats local not exclusively to southwest China, yet in addition Laos and Myanmar.