** Shares of Monash IVF Group MVF.AX fall as much as 16.5% to A$0.710, their lowest level since April 23
** Stock among the worst performers on ASX All Ordinaries index .AORD
** Co downgrades FY25 underlying NPAT forecast to about A$27.5 million ($17.73 million), from previous forecast of A$30.0 million to A$31.0 million
** Says operating conditions worsened in April
** Says it continues to monitor key indicators and any implications that may arise after the incident last month in which a woman gave birth to wrong couple's baby in IVF mix-up
** As of last close, MVF is down 33.1% YTD
($1 = 1.5513 Australian dollars)
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))