What Is Coronavirus (COVID-19)?

What Is Coronavirus (COVID-19)? The World Health Organization declared the new #Coronavirus disease (COVID-19) outbreak a global health emergency in January 2020. Experts at Johns Hopkins Medicine are closely monitoring the spread of the virus and offering useful information on what the disease is and how to help prevent transmission. For more information, please visit the #JohnsHopkins Medicine coronavirus website. What is Coronavirus? (0:45)