Lower Merion Covid Cases Rose in July – Are Down This Week August 5, 2020 by Gerry Lower Merion Covid Cases Rose in July – Are Down This Week. The running seven-day total for new Covid-19 cases in Lower Merion, got as low as 4 (6/23-6/24 to 6/29-6/30) and then rose to 30 (7/21-7/22). In the last few days it’s been hovering in the high teens.