Why an approved coronavirus vaccine may not end the pandemic quickly By: MarketWatch September 09, 2020 at 06:44 AM EDT A vaccine with just 60% effectiveness probably won't alter the on-the-ground situation very much. Read More >> Related Stocks: Biontech Se ADR Docusign Inc KLA-Tencor Corp Nasdaq Composite Novavax Inc Pfizer Slack Technologies Inc Tesla, Inc. Zoom Video Communications Cl A