THE CENTRAL HOSPITAL OF WUHAN VIA WEIBO /via REUTERS
- The US has confirmed 60 coronavirus cases, including 42 people who were on the Diamond Princess cruise ship in Japan.
- The latest US patient, a northern California resident, had no known exposure to the virus or travel history to China.
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The US has confirmed 60 cases of the new coronavirus that originated in Wuhan, China.
The virus causes a disease known as COVID-19, which has killed more than 2,800 people and infected more than 82,000 others globally since December.
The US Centers for Disease Control and Prevention (CDC) have confirmed cases in six states: Arizona, California, Illinois, Massachusetts, Washington, and Wisconsin. Officials have recorded one potential case of "community spread" — that patient had no known exposure to the virus or travel history in China.
Forty-two passengers who were quarantined on the Diamond Princess cruise ship were repatriated after disembarking the vessel, adding to the US' total. Three people who were evacuated from Wuhan to the US also tested positive for the coronavirus.
For the latest case total, death toll, and travel information, see Business Insider's live updates here.
Here's everything we know about the cases in the US.
The US reported its first potential case of "community spread" on Wednesday: a California patient with no known exposure to the virus.
David McNew/Getty Images
A resident of Solano County, California, was admitted to UC Davis Medical Center on February 19, after previously being admitted to another hospital in Northern California.
The patient wasn't tested for the coronavirus for four days after that, however, because they didn't meet the CDC criteria for testing.
The CDC said the person wasn't exposed to any known patients that had the virus, nor did they travel anywhere with confirmed cases. That's a sign that the virus could be spreading in the US.
Still, the CDC said it has not yet ruled out the possibility that the patient contracted the virus from an infected traveler.
In total, the US has tested at least 445 people for the virus since January 21 and confirmed 60 cases.
STR/AFP via Getty Images
The CDC is separating US cases into two categories: repatriated Americans and cases confirmed in the US.
The repatriated group includes 42 passengers from the Diamond Princess cruise ship who got the coronavirus.
Japanese authorities imposed a 14-day quarantine on the cruise ship after a person tested positive for the coronavirus, but 690 passengers wound up with COVID-19.
Last week, 328 Americans who were on the ship were flown back to the US. On the evacuation flight, 14 US citizens who'd tested positive for the virus flew in an isolation box, while others who'd been on the ship sat in a separate area. Twenty-eight more people later got sick.
Everyone who was on the cruise has been quarantined at two US military bases — the Travis Air Force Base in Fairfield, California, and the Lackland Air Force Base in San Antonio, Texas — for two weeks.
Health experts have criticized the decision to quarantine people on the ship, suggesting that the confined spaces and poor hygiene practices on board may have helped the virus spread.
At least three people tested positive for the virus after arriving in the US on evacuation flights from Wuhan.
The Lackland Air Force Base.
Lackland Air Force Base
A patient tested positive for the virus while under a mandatory 14-day federal quarantine at the Lackland Air Force Base near San Antonio, Texas. The quarantine started February 7 after evacuees arrived from Wuhan on a flight charted by the state department.
The CDC said the person was isolated and is receiving treatment at a nearby hospital.
Two more evacuees tested positive while under quarantine at the Miramar Marine Corps Air Station in San Diego, California. Those two patients arrived on different planes and were housed in different quarantine facilities, according to the CDC. Both were sent to local hospitals.
In total, the US government has evacuated around 800 Americans from Wuhan.
HECTOR RETAMAL/AFP via Getty Images
They've all been quarantined at US military bases, and many have since been released.
Two coronavirus cases were reported in Sacramento, California, on February 21.
Both patients had recently traveled to China and isolated themselves upon returning to the US. One is in Sacramento County, and that patient is no longer symptomatic, according to public-health officials. The other is in Humboldt County and also doing well.
A case in Wisconsin was confirmed on February 5.
The Wisconsin patient had "a history of travel to Beijing, China, prior to becoming ill," according to the state's health department.
The individual was quarantined at home, officials added, but they declined to provide further details.
"The risk of getting sick from 2019 novel coronavirus in Wisconsin is very low," state health officer Jeanne Ayers said in a statement. "We are responding aggressively to the situation and monitoring all developments."
Two cases were confirmed in San Benito County, California, on February 2.
US evacuees who were in China leave an aircraft that was chartered by the State Department to evacuate government employees and other Americans from Wuhan.
The San Benito County Health and Human Services Agency announced that the coronavirus patients there are a husband and a wife, both 57 years old. The man recently traveled to Wuhan then passed the virus to his wife after returning to California.
The couple was transferred by a specialty ambulance to a hospital at the University of California, San Francisco after both patients "showed worsening symptoms," the San Benito health agency said in a statement.
Before that, health officials announced another case in California: a woman in the San Francisco Bay Area.
Smith Collection/Gado/Getty Images
The Santa Clara County Public Health Department said the woman contracted the virus while visiting Wuhan.
"She has stayed home since she arrived except for two times to seek outpatient medical care," Sara Cody, the county's health officer, told reporters. "She has been regularly monitored and was never sick enough to be hospitalized."
The woman's family was also isolated and remained in their home, Cody added.
The first coronavirus case in Santa Clara County was confirmed on January 31.
Yichuan Cao/NurPhoto via Getty Images
Officials said the two cases in Santa Clara County were not related. The other patient was a man who also recently visited China: He returned from a trip to Wuhan and Shanghai on January 24.
Cody said the patient did not leave his home except to seek medical care, so he came into contact with "very few individuals" after his return from China. However, he visited the Good Samaritan Hospital in San Jose, where five healthcare workers were exposed to the coronavirus. They were told to stay home until February 11.
The man did not need to be hospitalized and was being treated at home, Cody said.
On February 1, Massachusetts health officials confirmed that a man there who'd recently returned from Wuhan had contracted the illness.
BSIP/UIG Via Getty Images
Department officials said in a statement that the man was in his 20s and lived in Boston.
He sought medical care shortly after arriving in the US, and authorities monitored his contacts for symptoms.
Three other US cases were confirmed on January 26: two in California and one in Arizona.
VIVEK PRAKASH/AFP via Getty Images)
On January 22, a Wuhan resident who was traveling through Los Angeles International Airport on his way to China told airport staff that he wasn't feeling well and was immediately taken to a local hospital.
Another case was identified in Orange County. The patient there was kept in isolation at a hospital.
In Arizona, meanwhile, a patient in Maricopa County was isolated. Health officials described the person as "a member of the Arizona State University community" who did not live in university housing.
All three people had recently traveled to the US from Wuhan.
A woman in her 60s in Chicago was the second confirmed case in the US.
The woman traveled to Wuhan in December to care for her elderly father, then returned to Chicago on January 13.
She did not exhibit any symptoms while traveling but told her doctor a few days after returning that she was feeling unwell. She was sent to a local hospital, where she was isolated and given fluids. Doctors treated her symptoms much like they would treat pneumonia.
As of January 24, the woman was in stable condition, according to Chicago's ABC7 News. Local health officials said she did not take public transportation or attend any public gatherings.
"I want to start by stating clearly: This is a single travel-associated case, not a local emergency," said Allison Arwady, the commissioner of the Chicago Department of Public Health, according to ABC7.
The spouse of the woman in Chicago also contracted the virus.
Matt Hartman/AFP/Getty Images
The woman's spouse had not traveled to China. His case was the first instance in which the coronavirus spread from person to person in the US.
The very first US case was confirmed on January 21: a man in his 30s in Snohomish County, Washington.
Twenty US airports are screening passengers for the virus. Flights in and out of Wuhan have been canceled.
But the man who contracted the virus landed at Seattle-Tacoma International Airport before those protocols were instated. He did not exhibit any symptoms while traveling. Health officials said they were able to detect this case early, and the man was put under strict isolation.
Chris Spitters, a health officer for the Snohomish Health District, said on January 21 that the man was "hospitalized out of an abundance of precaution and for short-term monitoring, not because there was severe illness."
A spokesman at Providence Regional Medical Center Everett told The Daily Herald on January 24 that the man was in good health.
The US has barred foreign nationals who have been in China within the past 14 days from entering the country.
US citizens who have been in China's Hubei province within the prior 14 days can be quarantined for up to two weeks.
COVID-19 is marked by symptoms like fever, coughing, and difficulty breathing.
The coronavirus family is a large group of viruses that typically affect the respiratory tract. Coronaviruses can lead to illnesses such as the common cold, pneumonia, and SARS. A recent study from the Chinese Center for Disease Control found that around 80% of coronavirus cases in China have been mild.
The CDC recommends that all travelers frequently wash their hands with soap and water and scrub for at least 20 seconds. They should refrain from touching their eyes, nose, or mouth with unwashed hands.
Sarah Al-Arshani and Morgan McFall-Johnsen contributed reporting for this story.
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