Possible Clues:

• A new work outside hospital in a mound of earth
• Everyone outside national organisation greeting result of workers' efforts
• A problem besetting one of many a colony of insects
• Frenetically busy place engaged in philanthropy not very well
• Article with lines about this reduced agglomeration of workers?
• Small mound in a yard
• A number, unspecified, work round hospital, bustling place
• 26 down might be the sort of female to be found there