 New York, New York--Newsfile Corp. - May 14, 2021 - The Klein Law Firm announces that a class action complaint has been filed on behalf of shareholders of BELLUS Health Inc. NASDAQ: BLU alleging that the Company violated federal securities laws.Class Period: September 5, 2019 and July 5, 2020Lead Plaintiff Deadline: May 17, 2021Learn more about your recoverable losses in BLU: 