Concert venues are banking on proof of vaccines or negative tests to woo back fans

MARYLAND HEIGHTS, Mo. — Fans of the band Wilco could have reasonably interpreted frontman Jeff Tweedy singing “I Am Trying to Break Your Heart” at an Aug. 13 concert at St. Louis Music Park as the universe explaining the past year or so. For example, 30-year-old fan Lazarus Pittman had planned to see Wilco and co-headliner Sleater-Kinney in August 2020 at the open-air venue in this suburb west of St. Louis. Then the show was postponed because of the covid-19 pandemic. Pittman got sick with the coronavirus. He quit his job as a traffic engineer in Connecticut to relocate to St. Louis for his gi...