INVESTIGATION ALERT: Fields Kupka & Shukurov LLP Is Investigating Chembio Diagnostics, Inc. for Potential Breach of Fiduciary Duty Claims NEW YORK, June 19, 2020 (GLOBE NEWSWIRE) -- Fields Kupka & Shukurov LLP is investigating potential breach of fiduciary duty claims involving the board of directors of Chembio Diagnostics, Inc....