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Military Health System

Important Notice about Pharmacy Operations

Change Healthcare Cyberattack Impact on MHS Pharmacy Operations. Read the statement to learn more. 

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Contact the Immunization Healthcare Division

Contact Your Immunization Healthcare Specialist or Region Vaccine Safety Hub

IHD Headquarters


7700 Arlington Boulevard
Defense Health Headquarters (DHHQ), Suite 5143
Falls Church, VA 22042-5143


  • Toll Free: 1-877-GETVACC (1-877-438-8222)
  • Local: 1-703-681-4245
  • DSN: 761-4245
  • Option 3 for general vaccine questions, to include vaccine policy, deployment requirements, and travel recommendations
  • Option 2 for Storage and Handling questions
  • Calls are answered during normal duty hours, Monday-Friday 8:00 a.m. - 5:00 p.m. Eastern Time (excluding Federal Holidays) 


IHD Clinical Services

Worldwide DHA Immunization Healthcare Support Center

  • Call 1-877-GETVACC (1-877-438-8222), Option 1 for live clinical consultation
  • Calls are answered 24 hours a day, 7 days a week by licensed healthcare providers with expertise in immunization issues to assist in answering patient and provider inquiries.
  • As of Oct. 1, 2018, the AskIHD secure communication web portal for clinical assistance is no longer available.  IHD will continue to provide 24/7 clinical support through the Immunization Healthcare Support Center.
Last Updated: July 11, 2023
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