Public health authorities and medical professionals in Wisconsin are preparing for potential cases of a respiratory virus that’s new to humans, having emerged in China and subsequently spreading around the world.

The 2019 novel coronavirus, also called 2019-nCoV for short, is related to viruses that cause the common cold. It also has similarities to viruses responsible for more serious respiratory illnesses, such as the deadly outbreak of SARS in 2002 and 2003. As of the beginning of February 2020, the newly identified virus that first appeared in the city of Wuhan in central China, has killed hundreds and sickened tens of thousands in China since identified in December 2019.

As the disease has spread, it threatens to become a global pandemic, epidemiologists warn. Much remains unknown about 2019-nCoV, including how easily and by what means it spreads, the spectrum of illness it causes and how deadly it is.

In the United States, federal health officials cited these and other swirling uncertainties when they announced on Jan. 31 that the Trump administration has declared a public health emergency in response to the outbreak. The declaration accompanied strict new border controls aimed at limiting the spread of the coronavirus from China. These include barring foreign nationals from entry to the U.S. if they traveled to China within the 14 days prior to their arrival.

The moves came a day after the World Health Organization declared the coronavirus outbreak a global health emergency. The declaration compels United Nations member governments to more actively prepare for an outbreak; however, the WHO has urged against restricting movement across international borders. The organization cautioned that imposing such restrictions may result in more harm than good, but a number of nations have followed the U.S. government’s actions and restricted entry from China.

Still, 2019-nCoV may prove difficult to control: On the same day WHO issued its declaration, the U.S. joined a handful of nations outside China in recording a case of human-to-human transmission of the virus within its borders. In this case, Illinois authorities documented a transmission between a wife and husband in the Chicago area.

Though federal officials maintain that the risk of infection remains low to the general population, public health authorities in Wisconsin have been on alert for any potential cases. The focus is on people who have recently traveled to China — particularly the province of Hubei, where the virus originated — and who exhibit signs of possible infection. The symptoms health officials are watching for are a fever accompanied by cough or shortness of breath.

As the federal government and international organizations intensified their mobilizations at the end of January, the Wisconsin Department of Health Services is working to identify individuals in the state who exhibit at least some of these symptoms and who had a recent history of travel from mainland China.

Testing is being performed at the Centers for Disease Control and Prevention in Atlanta. The number of individuals being tested, and any positive results for the virus, are expected to increase as the rapidly evolving public health emergency unfolds. As they wait for test results, state health officials are maintaining a guarded posture.

“Right now we’re in the preparedness phase,” said Dr. Ryan Westergaard, chief medical officer and state epidemiologist for communicable diseases for Wisconsin DHS.

Will Cushman

Originally published on, which produced the article in a partnership between Wisconsin Public Radio, Wisconsin Public Television and Cooperative Extension.

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