** Shares of biotech Moderna MRNA.O fall 3% to $46.70 in morning trading
** The U.S. FDA says it will hold a meeting of outside experts to review MRNA's experimental flu shot
** Advisory committee meeting is scheduled for June 18
** FDA had
reversed course
to review co's amended application for the mRNA-based seasonal flu vaccine after initially rejecting the submission
** Agency's decision is expected by August 5
** Including session's move, stock up 58.2% YTD
(Reporting by Puyaan Singh)
((Puyaan.Singh@thomsonreuters.com;))