Immunization Registry

WebIZTM is a Web-based, database-driven immunization registry system currently implemented at numerous state and local government agencies in the US and internationally. Designed to meet the standard requirements for effective tracking and administration of immunizations in a public health setting, WebIZ also provides a great deal of customization options and extensibility that serve the needs of the most sophisticated agency.


  • A robust vaccine Recommender facility which incorporates CDC ACIP guidelines based on CDSi logic, supporting data, and tests
  • Integration with external systems, such as vital records, master patient indexes, and electronic medical records via HL7 (versions 2.3.1 and 2.5.1)
  • Multiple levels of inventory tracking, including VTrckS integration
  • Optional “school nurse” version for streamlined data entry and student roster management

Complementary Products

Envision has developed a suite of complementary products that both extend the power of the IIS and empower public health staff to manage vaccine-preventable diseases in their populations. All additional modules are integrated with the WebIZ system, so vaccine and case history can be administered jointly, if desired.


  • Perinatal HepB
  • Sexually Transmitted Diseases
  • Provider management
  • Mobile, disconnected immunization data capture
  • Analytics driven by Microsoft Power BI

Cloud Hosting

In 2015, Envision began hosting customer applications in Microsoft’s Azure Government Cloud. For organizations with limited IT resources, this can be an attractive option, and is the preferred solution for most jurisdictions today.


  • Secure, reliable infrastructure as a service (IaaS) deployment in Microsoft Azure Government Cloud
  • Full-spectrum IT support for hosted applications


All Envision web products are designed for browser-based operation with no client-side software requirements. Our development is exclusively on the Microsoft platform, delivering outstanding performance and scalability while providing best-in-class total cost of ownership metrics. Specifically, we utilize the SQL Server database on Windows Server, both in on-premises and hosted IaaS configurations.

Our programming platform is Microsoft’s .NET Framework using C# and JavaScript. A typical installation might be structured as shown here.

The WebIZ Mobile solution is built for the Apple iOS platform using Xamarin, and includes tight integration with an iOS-based workflow system from Countermind, LLC called Mobile IntelligenceTM Clinic.