Of course, there are problem in hospital and public health where there is no EA plan which mean no interoperability. Patients are getting services from different hospitals due to may be patients choice or disease condition which need to admit in certain specialist hospital. In general, every hospital records data on their separated system and just give the hardcopy of discharged documents. Patients might lost or damage their own record and others health care provider only get information only on history taking which might consume lot of time and if there is transferable data from one services to another, lots of time and money can be safe, accurate clinical history and diagnosis, no missing history like drug allergy history.
Current situation in developing countries, there is no central data system or architecture to manage different hospitals and public health program. Each program try to develop their own architecture funded from donor with their program specific need and requirement for donor report which become difficult to change the architecture for interoperability(EA).