In Brief

Coronavirus outbreak officially declared a pandemic, WHO says

It's the first pandemic caused by a coronavirus, officials said.

passengers at LAX wear masks in the wake of the coronavirus outbreak
(Image credit: Mark Ralston/AFP/Getty)

The World Health Organization (WHO) has officially declared the outbreak of COVID-19 a pandemic, after the disease caused by the new coronavirus spread to more than 100 countries and led to tens of thousands of cases within a few months.

"We are deeply concerned both by the alarming levels of spread and severity [of COVID-19], and by the alarming levels of inaction," Tedros Adhanom Ghebreyesus, the director-general of WHO, said at a news conference on today (March 11). "We have therefore made the assessment that COVID-19 can be characterized as a pandemic."

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Rachael Rettner
Contributor

Rachael is a Live Science contributor, and was a former channel editor and senior writer for Live Science between 2010 and 2022. She has a master's degree in journalism from New York University's Science, Health and Environmental Reporting Program. She also holds a B.S. in molecular biology and an M.S. in biology from the University of California, San Diego. Her work has appeared in Scienceline, The Washington Post and Scientific American.