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Researh Service


Another Coronavirus Emerges:

U.S. Domestic Response to 2019-nCoV



January 29, 2020

The Emergence of 2019-nCoV

On December 31, 2019, the World Health Organization (WHO) was infoned of a cluster of pneumonia
cases in Wuhan, China. Illnesses have since been linked to a previously unidentified strain of coronavirus,
designated 2019 novel Coronavirus, or 2019-nCoV. To date, thousands have been infected, mostly in
China, and over 100 have died. The disease has spread to several other countries, including the United
States. As the scope of the epidemic widened in China, the U.S. Centers for Disease Control and
Prevention (CDC) stated on January 27, 2020, that the immediate health risk from the new virus to the
general American public is low currently. With the situation rapidly changing, both WHO and CDC post
frequent updates.
Coronaviruses (see Figure 1) are common respiratory pathogens, usually causing mild illnesses such as
the common cold. The global health community is closely monitoring 2019-nCoV because of the severity
of symptoms (including death) among those infected, and the speed of its spread worldwide. 2019-nCoV
is causing the third-serious novel coronavirus outbreak in modem times, following severe acute
respiratory syndrome (SARS) in 2002 and Middle East Respiratory Syndrome (MERS) in 2012. Experts
do not know the origin of 2019-nCoV, though genetic analysis and other features suggest an animal
source.













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