Vaccine Co-Administration Checker
A tool for healthcare professionals.
Can these vaccines be given at the same time?
Use our vaccine co-administration checker to quickly find guidance on whether two vaccines can be administered at the same visit, including any recommended intervals or special considerations.
This tool summarises vaccine co-administration guidance from the Australian Immunisation Handbook and provides direct links to the relevant Handbook sections for further information.
Immunisation Coalition quick reference
Vaccine co-administration checker
Select two vaccines to view available co-administration guidance.
Select two different vaccines to see the guidance.
About this resource
This checker summarises vaccine co-administration information supplied by the Australian Immunisation Handbook. It is intended as a quick-reference aid and does not replace the current Australian Immunisation Handbook, relevant product information or individual clinical assessment.
Recommendations may vary according to age, pregnancy, medical conditions, vaccine formulation and urgency. Unless a registered combination product is being used, administer vaccines with separate syringes and at separate injection sites.
About vaccine co-administration
Co-administration means giving two or more vaccines at the same vaccination encounter. In many circumstances, vaccines can be safely administered at the same visit. Co-administration can help reduce missed opportunities for vaccination and ensure people receive recommended vaccines on time.
However, recommendations can vary depending on the vaccines being administered, vaccine formulation, age and other individual circumstances. Some combinations have specific timing recommendations or other considerations.
The checker above is designed to make it easier to find the relevant co-administration guidance in the Australian Immunisation Handbook.
How to use this tool
- Select the first vaccine from the dropdown menu.
- Select the second vaccine you would like to administer.
- Review the result, including any timing recommendations or special considerations.
- Follow the Australian Immunisation Handbook link provided with the result for the complete and most current guidance.
Understanding the results
✓ Can be co-administered
The Australian Immunisation Handbook supports administration of the selected vaccines at the same vaccination encounter.
! Can be co-administered with considerations
The vaccines may be administered together, but there are additional considerations such as reactogenicity, immune response, age or population-specific advice.
↔ Timing recommendation applies
Specific timing guidance applies to the selected vaccines, such as administering them on the same day or observing a recommended interval between doses.
ⓘ No pair-specific statement in the Australian Immunisation Handbook
The Handbook does not include a specific statement for the selected vaccine combination. Where available, the checker displays broader co-administration guidance for the individual vaccines and links to the relevant Handbook sections.
Important information
This resource is intended to assist healthcare professionals to quickly locate vaccine co-administration information contained in the Australian Immunisation Handbook.
It is a summary tool and does not replace the Australian Immunisation Handbook, relevant vaccine product information or individual clinical assessment. Recommendations may vary according to age, pregnancy, medical conditions, vaccine formulation and individual circumstances.
Healthcare professionals should refer to the current Australian Immunisation Handbook and relevant product information when making vaccination decisions.
Source: Australian Immunisation Handbook, Australian Government Department of Health, Disability and Ageing.
Last reviewed: August 2026