 CLEVELAND--BUSINESS WIRE--CBIZ, Inc. NYSE: CBZ, a leading provider of financial, insurance and advisory services, has released the Q1 2021 CBIZ Main Street Index to gauge the continued impact of the COVID-19 pandemic on the small and midsize business SMB marketplace. The findings reveal that while challenges persist, Main Street businesses are staying resilient and maintaining a sense of optimism. The survey, which was conducted between Feb. 8 and Feb. 26, 2021, analyzes responses from ov 