The curtailment in economic activity will be deep, so the question is: How long will it last? Nobody knows with a high degree of confidence; however, the measured resumption of economic activity in China a few months after the COVID-19 outbreak was first seen is an encouraging sign that the economic effect may be less severe than “another Great Depression” (the phrase you used).
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”