Brown's exit comes after just three months with the agency. UK CEO Nicholas Walters said: ‘Sadly, it did not work out, so we decided to call it a day. I wish her all the best.'
PRWeek was unable to contact Brown, a former UK healthcare boss at Countrywide Porter Novelli (now Porter Novelli UK).
Eldred, meanwhile, has quit to join Edelman. She joined MS&L only last year from Ruder Finn (PRWeek, 8 April 2005). Walters said: ‘We are sad to see Claire go - she wants a different challenge, which we can only respect.'
Walters said he was interviewing for the role of head of healthcare, adding: ‘We are busy and focusing on 2007 planning for clients Sanofi-Aventis and Eli Lilly.'
Eldred will join Edelman on 16 October as an associate director.
Separately, at Edelman, Neil McCallum-Deighton has left a director role at its med ed offering BioScience after less than 12 months.
He left last month and is believed to be freelancing. PRWeek has been unable to contact him. Edelman already has a replacement, whose identity it will reveal shortly.