CHEMBIO ALERT: Barbuto & Johansson, P.A. Informs Investors that a Securities Class Action Lawsuit Has Been Filed Against Chembio Diagnostics, Inc.; Sued for Misrepresentations of COVID-19 Antibody Test; Shares Fell More than 60% on News that FDA Revoked Its EUA WELLINGTON, Fla., June 19, 2020 (GLOBE NEWSWIRE) -- Barbuto & Johansson PA (“BARJO”) and Of Counsel, Neil Rothstein, Esq. (with over 30 years of Securities Class Action Experience including...