Wall Street tumbles to seven-week low amid fresh coronavirus-driven lockdowns

Wall Street's main indexes tumbled to their lowest in nearly seven weeks on Monday.   US stocks fell as worries about fresh coronavirus-driven lockdowns spilled over from Europe.   The Dow Jones Industrial Average plunged 1.8 percent and the S&P 500 declined 1.2 percent while the Nasdaq Composite index fell marginally by 0.1 percent.