Though mass shootings have happened less often during the pandemic, gun deaths remain high in the U.S. And, an independent panel says the AstraZeneca vaccine trial data is misleading.Read more:On Monday afternoon, a man walked into a Boulder, Colo., grocery store and started shooting. Ten people were killed, including a responding police officer. Reporter John Woodrow Cox lays out what we know about the second mass shooting in a week and addresses the misconception that gun violence has stalled during the pandemic.After AstraZeneca announced that trials determined the vaccine it produced with Oxford University was 79 percent effective, an independent panel says the company used outdated and misleading data. William Booth reports on the ramifications.