It varies a lot pending on expected caseload, set-up and design of the program (GAM rates know in the area, you can then calculate the amount of beneficiaries malnourished at the moment, and thus how many will need services, taking expected coverage into account). The larger the team, the more beneficiaries can be seen by day, compared to OTP services integrated within the health service (and thus caseload each day should be lower). I always use the maximum 1 hour walk as a reference point when opening a program (although not always possible), but at the same time prefer linking nutrition services to health services and thus look at how many health posts etc... are present in the area. if this is an emergency response, mobile teams would be a good solution for the beginning. I am not aware of any source that gives a number as it is dependent on so many factors, and varies enormously. I hope this was of any help, and answered your question. I think more information is needed from you if you need a figure to for example develop a proposal.

Thanks Stein for your response. Completely agree with your appraisal of each situation and the requisite number of services, taking into consideration case load, existing health facilities, access etc. I just wanted to see if there was a proxy bench-mark or globally accepted standard out there for reference.