The Oregon health authority said a school employee, who was not identified for privacy protection, experienced COVID-19-like symptoms beginning February 19 and had no history of traveling overseas nor close contact with any infected person.
One case involves a teenager in Everett with no travel history.
Health officials in California, Oregon and Washington state are anxious about the coronavirus spreading through West Coast communities after confirming at least three patients were infected by unknown means.
A day earlier, state health officials had pegged the number of people in California with the virus at 33 after investigators announced that a woman hospitalized in Sacramento contracted it.
US and global stocks plummeted as rattled investors braced for the prospect that a pandemic could further dent an already slowing world economy. That's because of the imminent end of the isolation period for those passengers and the relatively small number of persons who ended up testing positive, officials said.
Cody said the newly confirmed case in Santa Clara County is not linked to two previous cases in that county, nor to others in the state. He also said Trump authorized the State Department to raise the travel advisory for certain affected areas to Level Four, the highest level.
The Associated Press reported it is the first US death from the disease, which started in China and has been slowly spreading across the globe.
There are now more than 85,000 cases globally - a lot of them in China, where the virus originated - and more than 2,900 deaths.
The new, unexplained COVID-19 cases were confirmed by health authorities in Washington County, Oregon, and Snohomish County, Washington, where the infected person is a high school student.
The three latest patients were diagnosed based on results obtained in their respective states from CDC-supplied test kits and are considered "presumptive positive" cases pending CDC confirmatory testing, the USA agency said. An additional case was confirmed in Washington state on Friday, with the patient having recently traveled to South Korea, where more than 3,000 people are now confirmed to have the virus. Trump's administration said Saturday the existing travel ban on Iran would extend to foreign nationals who had been in the country the past 14 days. Only two person-to-person transmissions were documented among them, both between married couples.
Previously much of the focus was on people who had visited places such as Wuhan, China, where the outbreak began, or who had been in close contact with people who were infected.
He reportedly returned to school on Friday morning as he was feeling better.
The World Health Organization said earlier this week the risk of the new coronavirus expanding worldwide is now "very high".
Fauci warned lawmakers the country lacked enough testing resources, the source said on condition of anonymity. Unprecedented, aggressive efforts have been taken to contain the spread and mitigate the impact of this virus.
Coronavirus is spread primarily through tiny droplets coughed or sneezed directly from an infected person into the face of someone nearby, as opposed to the more contagious "airborne" transmission of a virus like measles, which can remain suspended in enclosed spaces and be breathed in hours after being exhaled by sick individuals, experts say.
Quant à l'Amérique latine, elle a connu mercredi son premier cas, avec un Brésilien de retour de Lombardie. En Corée du Sud , le nombre de contaminations a encore bondi pour dépasser le millier de cas.
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The tests for coronavirus were conducted the day after her return to Canada, with positive results coming back Thursday. The two other patients, who also tested positive for COVID-19, sought care at Lakeridge Health Ajax and Pickering.
They are being treated in Auckland City Hospital and their condition is improving, a Health Ministry statement said. She said numerous deportees "on any common sense test" identified as being Australian.
But the biggest virus clusters have been linked to a hospital and a religious group near the south-eastern city of Daegu. What about China, where the outbreak started? Public health and political experts have cast doubt on this claim.
The patient was then cared for at the hospital and was discharged where she is also in self-isolation at home. Around 80 per cent of people recover without special treatment and one in six people fall seriously ill.
Leroy Merlin en Russie est au bord du scandale ?
La part du réseau Leroy Merlin sur le marché russe de "l'équipement ménager" approche les 20%. Beaucoup d'entre eux se plaignent des manifestations de corruption et des violations de l'éthique des affaires.
Fils de légende de la Formule 1 a dépassé son père
Nul doute qu’elle offrira à Mika la meilleure option pour poursuivre sa carrière dans le sport automobile. Et il n'est pas Andrei Arshavin, pour répondre à la question sur les attentes facilement et naturellement.