 New York, New York--Newsfile Corp. - April 30, 2021 - Bronstein, Gewirtz Grossman, LLC notifies investors that a class action lawsuit has been filed against BELLUS Health Inc. BELLUS or the Company NASDAQ: BLU and certain of its officers, on behalf of shareholders who purchased or otherwise acquired BELLUS securities between September 5, 2019 and July 5, 2020, inclusive the Class Period. Such investors are encouraged to join this case by visiting the firms... 