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New coronavirus case in California might signal ‘community spread’ of outbreak

New coronavirus case in California might signal ‘community spread’ of outbreak

U.S. health authorities said they’ve identified the first case of coronavirus that doesn’t have known ties to an existing outbreak, a worrying signal that the virus is circulating in the U.S. despite reassurances from the Trump administration that it’s contained.

The U.S. Centers for Disease Control and Prevention said the patient doesn’t appear to have traveled to China or been exposed to another known case of the coronavirus. Health authorities are increasingly concerned about what’s known as community spread, where the virus begins circulating freely among people outside of quarantines or known contacts with other patients.

“At this time, the patient’s exposure is unknown,” the CDC said in a statement. “It’s possible this could be an instance of community spread of Covid-19, which would be the first time this has happened in the United States.” Covid-19 is the technical name for the disease caused by the virus.

The CDC said the case was picked up by doctors in California, and that the patient may have been infected by a traveler who brought in the disease. It didn’t give more information on the patient’s status. The new case brings the total of known infections in the U.S. to 15, not counting repatriated Americans.

The California Department of Public Health said the patient is a resident of Solano County, an area between San Francisco and Sacramento, and that the person was receiving medical care. The patient didn’t have a close contact with a known case or a travel history to China, the state said, a sign that health workers are examining the patient’s history to try and find out how they may have caught the virus and whether other people may be infected without knowing it.

“We have been anticipating the potential for such a case in the U.S., and given our close familial, social and business relationships with China, it is not unexpected that the first case in the U.S. would be in California,” Sonia Angell, the director of the California Department of Public Health, said in a statement. The state said the risk to the general public remains low.

The announcement came minutes after President Donald Trump finished a news conference describing the virus as largely contained.

“Because of all we’ve done the risk to the American people remains very low,” Trump said Wednesday at the White House. Markets have been roiled by increasing concerns that an outbreak that began in China, infecting more than 75,000 people there and killing over 2,700, has slipped through global efforts to contain it and is now propagating around the world.

“Whatever happens we’re totally prepared,” Trump said Wednesday evening, adding later: “There’s a chance it could get worse; there’s a chance it could get fairly substantially worse, but nothing’s inevitable.”

The new case in the U.S. may upend that hope. Health experts inside the government and out have called a global pandemic likely, pointing to the virus’s flu-like ability to spread, its long period of incubation, and the fact that most people have mild symptoms. While it has a relatively low mortality rate — some estimates put it around 2% — infections in large numbers of people could create a significant number of severe cases or deaths.

The expansion of outbreaks to Italy, South Korea and Japan has made the spread of the virus to the U.S. more likely, brought in by people traveling to and from those countries.

“The chances that there will be more importation of the virus into the U.S. has increased in a noteworthy way,” said William Schaffner, a professor of preventive medicine and infectious diseases at Vanderbilt University School of Medicine. “With the virus spreading in those countries, that just means there are more opportunities for the virus — which doesn’t need a passport — to get onto those planes and come to the United States.”

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