Eligible couple means
The eligible couple are currently married couple wherein the wife is in the reproductive age (i.e. 5 -49 yr. of age) Don't confuse with target couple: Eligible couples who have 2 - 3 living children Ref : Park 23rd edition Pgno : 492-493
A couple having 2 living children
A couple having given bih to 2 children, irrespective of their survival status
A couple with wife aged 15-45 yrs
A couple who is ready for sterilization
Concept of health and disease