Markets started the week on an optimistic note on Monday led by supportive global cues. The US help extended to India to meet the country’s vaccine shortage has also boosted markets sentiment. The U.S. response comes after Britain, France and Germany also pledged aid to India over the weekend. The BSE Sensex ended at 48,386.51, up 508.06 points or 1.06%. The NSE closed at 14,485, up 143.65 points or 1%