U.S. doctor says ‘the second wave has begun’

A second wave of coronavirus has started in the U.S. — and people need to remain careful or risk stressing out the health-care system again, said William Schaffner, a professor at the Vanderbilt University School of Medicine.

“The second wave has begun,” said the professor of medicine told CNBC’s “Street Signs Asia” on Monday. “We’re opening up across the country, but many, many people are not social distancing, many are not wearing their masks.”

Even so, he said he “cannot imagine” a second shutdown due to the impact of the first one.

Several states in America have reported recent spikes in Covid-19 cases as measures are eased throughout the country. The U.S. has the highest number of cases in the world. Nearly 2.1 million people have been infected by the disease and more than 115,000 people have died, according to data from Johns Hopkins University.

Schaffner added that mass gatherings and religious services are also being held. “Many people are simply not being careful, they’re being carefree,” he said. “That, of course, will lead to more spread of the Covid virus.”

Second shutdown?

Despite signs of a second wave, Schaffner said the option of another lockdown is “off the table.”

Instead, governments, businesses and religious leaders have to work together to promote mask wearing and social distancing in order to flatten the curve.

“If we do all the opposite — if we open up, do not have social distancing, don’t wear masks and congregate in large numbers again, we are going to be very stressed in the medical care system,” he warned.

“The complete shutdown was such a financial disaster, and had so many social and cultural implications that I cannot imagine we’ll have a shutdown again,” he said.

Other countries, however, have not shied away from reimposing measures when new clusters are detected in the community. In May, South Korea shut all night clubs and bars in Seoul after a new cluster surfaced there.

Last week, Beijing reportedly banned tourism and locked down 11 neighborhoods in response to infections related to a wholesale market.

— CNBC’s Noah Higgins-Dunn contributed to this report

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