A woman from Chicago who traveled to Wuhan, China, at the end of December and returned on Jan 13 represents the second travel-related case of novel coronavirus (2019-nCoV) infection diagnosed in the United States, according to officials from the Illinois Department of Public Health (IDPH) and the Centers for Disease Control and Prevention (CDC).

The CDC also announced that 63 suspected cases of 2019-nCoV are under investigation in 22 states, while 11 people have tested negative for the novel coronavirus, while 2 have been confirmed. On Jan 21, the CDC said a man in Washington state had contracted the disease.

Developments in the fast-evolving outbreak prompted US officials to step up travel restrictions to Wuhan, which is the epicenter of an outbreak that has topped 900 cases.

In addition, yesterday Texas A&M University confirmed that a student was being tested for 2019-nCoV and placed in isolation while awaiting test results. The student had recently traveled to Wuhan.

“We are expecting more cases in the US, likely to see cases of human-to-human transmission,” said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases.

Credit: iStock, Mlenny

Patient has mostly stayed home

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