Police officers walk past closed retail stores along Broadway in New York, the United States, on May 8, 2020. New data showed that U.S. employers cut a staggering 20.5 million jobs in April, erasing a decade of job gains since the global financial crisis and pushing the unemployment rate to a record 14.7 percent. While this marks the highest level of unemployment since the Great Depression, analysts said the figure does not capture the full scale of the COVID-19-induced job crisis, and the worst is yet to come. (Photo by Michael Nagle/Xinhua)

The U.S. economy officially entered a recession in February, ending the longest expansion in U.S. history, the National Bureau of Economic Research (NBER) said on Monday.

The Business Cycle Dating Committee of the NBER, which maintains a chronology of the peaks and troughs of U.S. business cycles, "has determined that a peak in monthly economic activity occurred in the U.S. economy in February 2020", the NBER said in a statement.

"The peak marks the end of the expansion that began in June 2009 and the beginning of a recession," the NBER said, adding the 128-month expansion after the 2008 financial crisis was the longest in the history of U.S. business cycles dating back to 1854.

While analysts often refer to recessions as two consecutive quarters of contraction in gross domestic product (GDP), in the United States the NBER formally determines when recessions begin and end on a range of factors.

A recession is a significant decline in economic activity spread across the economy, normally visible in production, employment, and other indicators. A recession begins when the economy reaches a peak of economic activity and ends when the economy reaches its trough, according to the NBER.

The NBER noted that the COVID-19 pandemic and the public health response have resulted in a downturn with different characteristics and dynamics than prior recessions. 

Photo taken on March 27, 2020 shows the U.S. Treasury Department in Washington, D.C., the United States. U.S. economic activity in the first quarter contracted at an annual rate of 4.8 percent amid the COVID-19 impact, the biggest decline since the Great Recession, the U.S. Commerce Department reported Wednesday. (Xinhua/Liu Jie)

"The unprecedented magnitude of the decline in employment and production, and its broad reach across the entire economy, warrants the designation of this episode as a recession, even if it turns out to be briefer than earlier contractions," said the NBER, an association of the nation's top economic researchers.

The NBER also determined that a peak in quarterly economic activity occurred in the fourth quarter of 2019. The U.S. economy contracted at an annual rate of 5 percent in the first quarter this year, compared with a growth rate of 2.1 percent in the previous quarter, according to the Commerce Department.

The coronavirus began to weigh on the U.S. economy in February and the pandemic forced widespread business closures in the country since mid-March. More than 42 million Americans have applied for unemployment benefits over the past 11 weeks.

Fallout from the COVID-19 pandemic will shrink the size of the U.S. economy by 7.9 trillion U.S. dollars over the next decade, according to new projections released by the Congressional Budget Office last week.

Source:Xinhua