Commodities are having a rough start to the week as investors continue to assess the possible fallout from the resurgence of Covid-19. Crude is adding to last week’s losses as the outlook for fuel demand worsens with authorities imposing growth-sapping restrictions in Asia. Goldman Sachs Group Inc. and JPMorgan Chase & Co. downgraded forecasts for China’s economic expansion amid a rise in new cases of the delta variant there. In the U.S., Florida and Texas remain the epicenters of the outbreak, with hospital capacity coming under pressure in some areas