** Monash IVF Group MVF.AX falls as much as 2.4% to A$0.728, lowest since July 8
** Stock set for worst day since July 7
** Co appoints Andrew MacLachlan as interim CFO
** Says current acting CEO Malik Jainudeen to continue in the role while co searches for a permanent CEO
** In June, former CEO Michael Knaap resigned, days after co disclosed a second fertility clinic mix-up in two months
** Stock last down 1.3%, brings YTD losses to 42%
(Reporting by Jasmeen Ara Shaikh in Bengaluru)
((JasmeenAraIslam.Shaikh@thomsonreuters.com;))