Write 600-800 words in an essay style answer to respond to the following question:



While there are several EHR implementation instances in the Kingdom of Saudi Arabia capable of collecting data from individual patients, there is an immense need of integration systems to interlink the EHRs installations to make them interoperable and to generate aggregated data.

Explain why the public health professionals are more interested in aggregated data rather than individual data and clarify the importance of these integration and data exchange systems for the field of public health informatics in the Kingdom of Saudi Arabia?

Give examples of this type of systems worldwide.