The NEMS has been designed to allow healthcare professionals to share information without needing to know who would like to receive that information. The healthcare providers which send information are known as publishers and send the information as event messages to NEMS.
The healthcare professionals that receive the information are known as subscribers and tell the NEMS what information they would like to receive by asking for different types of event messages. Each type of event message contains different information. A healthcare professional asking for an event message creates a NEMS subscription.
Subscribers will generally be healthcare professionals but could include patients.
When the NEMS is sent an event message from a publisher, it sends the event message to all those subscribing to the event.
An authorised healthcare professional can subscribe to events about patients by:
- asking for events about all patients that live in a specific area - for example, based on the patient's postcode or the postcode of the patient's registered GP
- asking for events about a specific patient, using their NHS number to identify them
The criteria a health and care professional uses to ask for event messages will be chosen based on what patients they are responsible for in an area and which patients they have a legitimate relationship with.