UPDATE 1-U.S. bird flu causes egg shortage, emergency measures By: Reuters: Company News May 22, 2015 at 18:18 PM EDT * Dutch, French companies seeking U.S. approval to export eggs (Adds details about push to import eggs, background on bird flu) Read More >> Related Stocks: Archer-Daniels-Midland Dunkin' Brands Group Gsk Plc ADR Merck & Co Post Holdings Inc Sysco Corp