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As the coronavirus epidemic aggravate inChinaand the virus trickle beyond the country ’s borders , U.S. officials are take precautions , just in case the computer virus becomes " the nextpandemic . "

Today , the U.S. declare a public health pinch , while accentuate the hazard to the U.S. populace is low-pitched . " Our end is to do all we can do to keep it that room , " Dr. Robert Redfield , the director of the   Centers for Disease Control and Prevention ( CDC ) said during a White House press briefing today ( Jan. 31 ) .

An illustration of a coronavirus.

set forth on Sunday , Feb. 2 , U.S. citizens , permanent resident physician and immediate family unit who have been in the Hubei responsibility in China will be subjected to a mandatory two - week quarantine . " strange national " who have traveled to China in the past 14 days wo n’t be allowed in the U.S. , officials herald during the briefing . What ’s more , if Americans visited any other part of China , they will be screen at airports and require to self - quarantine for 14 Day , they said .

The 195 Americans who were flown from Wuhan to the U.S. will also be quarantine for 14 day , the Centers for Disease Control and Prevention ( CDC ) announce earlier today ( Jan. 31 ) during a separate news league . The last fourth dimension the CDC ordered such a quarantine was over 50 years ago , for variola major .

" While we recognize this is an unprecedented action , we are facing an unprecedented public wellness threat , " Dr. Nancy Messonnier , the director of the CDC ’s National Center for Immunization and Respiratory Diseases , enjoin during a   news show conference . " We are groom as if this were the next pandemic , but we ’re hopeful still that this is not and will not be the case . "

A woman holds her baby as they receive an MMR vaccine

Related : Live Updates on the 2019 - nCoV

The passengers will be held at a U.S. air base in Ontario , California , where aesculapian faculty will monitor their health , for two weeks , Messonnier enjoin . All of the passenger have so far tested negative for the virus — but a minus initial screening test does not guarantee that these people wo n’t subsequently get nauseous , she said .

" The issue is that we do n’t know the sensitivity , specificity and positive predictive value of that test when we ’re using it in people who are n’t yet disgusted , " she suppose . In other words , the tests might not be sensitive enough to discover the lower levels of virus that would be present in people who are infect but are n’t yet point symptoms .

a photo of agricultural workers with chickens

Meanwhile , the magnitude of the epidemic in China is increase , with a 26 % increase in contagion since yesterday alone , Messonnier tell . There are now nearly 213 deaths associated with the computer virus and 10,000 infections , mostly on mainland China .

It ’s still unreadable how severe the disease is , but " the information that ’s come in from China advise that there is significant deathrate affiliate with this disease , " Messonnier say . That being said , it ’s difficult to calculate the disease severeness ,   especially because more wicked cases lean to be cover first , which discombobulate off computation , she lend .

But it ’s more and more unmortgaged that the computer virus is capable of spreading between people . Yesterday , the CDC harbinger the first type of person - to - someone transmittal in the U.S. , between an Illinois occupier who had traveled to Wuhan and her husband .

A worn USAID sign on a green rusty box

What ’s more , scientists incur that the virus can spread out even when an infected soul does n’t yet have symptoms . A 33 - year - old , otherwise tidy German businessman was taint with the computer virus when he met with a byplay partner from China who was infected with the coronavirus but did n’t show any symptoms . The computer virus appears to have hopped from her to the man of affairs and from the man of affairs to other colleagues in Germany , according to a new case report published today ( Jan. 31 ) inThe New England Journal of Medicine .

Yesterday ( Jan.30 ) , the World Health Organization announced that the new coronavirus outbreak is a public health emergency of international headache and the U.S. put a " spirit level 4 " travel advisory in berth — the most extreme level with the recommendation that people not locomote to China at all . Three major airline business — United , American and Delta — announce today that they were scratch all flights to China .

" We would rather be remembered for overreact than underreacting , " Messonnier said . But she mention that the computer virus is not spreading around the U.S. , and they do n’t currently recommend the use of typeface masks for the general American public .

Close up of a medical professional holding a syringe drawing vaccine from a vial to prepare for injection.

" Please do not let fear or affright guide your action , " Messonnier said . There are about 4 million Chinese Americans live in the U.S. , so " please do not assume that just because someone is of Asian descent that they have this new coronavirus . "

Originally published onLive Science .

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