Stocks jump as virus deaths slow; oil falls after OPEC+ delay

NEW YORK (Reuters) - World stock markets jumped on Monday, encouraged by a slowdown in coronavirus-related deaths and new cases in some global hot spots, oil prices tumbled again due to a delay in talks between Saudi Arabia and Russia to cut supply.The U.S. dollar was little changed against a basket of peers while sterling turned negative versus the greenback and euro after news that UK Prime Minister Boris Johnson was moved to intensive care as he grew sicker with Covid-19. Equities investors..