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For Providers

​What is an Immunization Information System (IIS)?

ImmuNet is Maryland's confidential and secure Immunization Information System (IIS). It is a statewide computerized database that collects and maintains vaccination records for children and adults. 

Using an IIS like ImmuNet helps improve public health by:

  • Supporting cost-effective and efficient disease prevention.
  • Help identify and reach under-immunized populations.
  • Improving vaccination coverage across the state.

Why It Matters:

According to national estimates, manually retrieving vaccination records can cost around $14.50 per child, while maintaining a child's record in an IIS costs approximately $3.91 - a significant cost-saving for providers and the public health system. This highlights the cost-effectiveness of using ImmuNet and similar systems for vaccination record management.

Why ImmuNet is Essential for Providers​

  • Physicians can overestimate how many of their patients are fully vaccinated, which can lead to gaps in immunization coverage and missed opportunities for preventive care.
  • Parents are often unaware of their child’s immunization status.
  • Inaccurate or missing records can lead to over-vaccination, which contributes to millions in unnecessary costs nationwide. ImmuNet helps reduce waste and improve patient safety in Maryland by preventing this issue.
  • In certain regions or among smaller practices, immunization reminder systems may still be lacking, which can hinder timely vaccination delivery.
  • ImmuNet allows for easy identification of at-risk or under-immunized populations.

Provider Benefits

ImmuNet offers several advantages for healthcare providers:
  • Save staff time retrieving or replacing records.
  • Improve care delivery with tools like printable vaccination reminders.
  • Access consolidated vaccination histories, even from multiple providers.
  • Manage vaccines efficiently, avoiding waste and unnecessary doses.
  • Meet reporting and quality requirements more easily​.
  • Electronically submit vaccination data and avoid manual data entry.

✅Key Takeaway

ImmuNet streamlines vaccination management, improves patient care, and helps meet public health goals - saving time, money and lives. ​

Learn more about IIS and ImmuNet

Get started with ImmuNet

System Requirements

Most computers with high-speed internet are compatible with ImmuNet. It supports all modern browsers but Google Chrome is recommended for the best experience.

Enroll Your Practice

To access ImmuNet, ​authorized providers must enroll here. After enrollment is reviewed by the Maryland Department of Health, you will receive your login credentials. While you wait:

Out-of-State Providers

You're encouraged to use your state's IIS. Maryland is working on cross-state data sharing, which may allow you to access Maryland records through your state's system in the future.

Reporting Requirements

Effective October 2019:​

All vaccinations administered in Maryland must be reported to ImmuNet, regardless of patient opt-out status. 
For compliance details, please see Reporting Requirements and State Statute §18–109(d)(6)(iii)​​.

Accessing Patient Vaccination Records

  • ​Already an Authorized User?

    • ​If you're authorized but don't yet have access, sign up for ImmuNet access. 

Note: You must confirm your identity under penalty of perjury before submission.​

Patients can access their vaccination records directly through the MyIR portal. 

Need brochures for your office?

Patient Opt-Out Information​

Maryland operates as an Opt-Out State per §18-10​​9(d)​. This means patient records are automatically included in ImmuNet unless the patient (or parent/guardian) chooses otherwise.

To Opt-Out

If a patient chooses not to share their vaccination record in ImmuNet:

To Rescind an Opt-Out

Use the online Rescind Opt-Out Form​ or download the printable Rescind Opt-Out Form​.

Request Opted-Out Records

Use the online Release of Opted-Out Record Form.

Security Note:

Online forms are preferred for faster processing and security. Otherwise, please use secure email if your form includes PHI/PII. To request a secure email, contact ImmuNet Support​​. ​

Useful Links

Contact Us

Need assistance? Visit our Contact Us​ page for support​.

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