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The IZ Gateway initiative (IZG) sponsored by the Centers for Disease Control and Prevention (CDC) is up and running. HLN has helped its Immunization Information System (IIS) clients connect to other IIS via the IZ Gateway from planning through testing and go-live. As anticipated, this electronic data exchange has resulted in an increase in record completeness for patient doses received in one jurisdiction, while living in another. Testing between our clients and other IISs, referred to as IIS-IIS pairings, has spurred productive inter-jurisdictional interoperability discussions, while also highlighting nuances in platform configuration. A few of these nuances are provided below.

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