Immunisation Calculator

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  1. It is recommended to enter the Calculator from the home page on each occasion and check for any updated information or news on the noticeboard.

    Immunisation tabs

  2. Select the ‘Calculator’ Calculator tab to access the data entry page.

  3. Select the ‘Immunisation Schedules’‘Immunisation Schedules’ tab to access current and previous immunisation schedules for all states and territories and the National Immunisation Program.

  4. Select the ‘Contacts’‘Contacts’ tab to access contact details for the Australian Government and all State and Territory Health Authorities.

  5. Select the ‘Help and Support’ tab to access additional information and resources that may be helpful in using the Calculator.

  6. More than one tab can be open at the same time, eg ‘Calculator’ and ‘Help and Support’. Right click on the required tab and select ‘Open in new tab’.

  7. The Calculator has a session timeout of 30 minutes. This is a security feature. If you are using the Calculator you will see an alert window that provides the option to complete your current catch up schedule prior to the elapsed session time. If you are not at your computer, the session will automatically expire and redirect to the home page after 30 minutes.  Data already entered will not be saved.                                  

  1. Enter the child’s name.

  2. Enter the DOB either manually in a dd/mm/yyyy format, eg 01/01/2000, or 1/1/2000 or use the calendar.
    • Note: On the calendar, click on the ‘month’ or ‘year’ heading to more quickly select previous months and years.
    • Note: The Calculator will accept a DOB up until the day before the 10th birthday.

  3. Select the state of residence.
    • Note: This ensures that recommendations are based on the relevant schedule as there are variations between states.

  4. Select ATSI identification as applicable.
    • Note: This allows users in the relevant states to enter Hepatitis A vaccines and ensures that the relevant schedule is used to calculate recommendations as there are variations between states.

  5. Consider whether the child has medical at risk (MAR) conditions.
    • Note: Hover over the MAR question for information regarding relevant MAR conditions.
    • Note: If the child has MAR conditions, select Yes. A message will appear advising that only the routine NIP schedule catch up will be recommended and reminding the user to assess the child for additional MAR vaccines that may be required. The message includes a link to the Handbook and the contact details for each state/territory. This message will appear and print on the final recommendation page. 

  6. Consider whether the child has received any vaccines overseas.
    • Note: If the child has received vaccines overseas, select Yes.  A message will appear advising that the child may have received vaccines not used in the Australian NIP and provides a link to information about vaccines used overseas and the antigens they contain.
    • Note: Information about overseas immunisation schedules and vaccines can also be found in the ‘Resources’‘Resources’ section under the ‘Help and Support’ tab.
    • Note: Only antigens used in the Australian NIP can be entered in the Calculator

  1. If the child has no immunisation history or valid immunisation documentation, click the ‘Preview’ button to preview the recommended catch up schedule.
  2. If the child has previous immunisation history, enter the date for the first encounter and tick all relevant antigens for that encounter.
    • Note: Click on the or hover the mouse over each antigen name for a list of vaccines used in Australia that contain that antigen or click HEREHERE for a table listing the Australian NIP vaccines and antigens they contain.
    • Note: Click HEREHERE to access information regarding vaccines commonly used overseas and the antigens they contain.
    • Note: History entered should be transcribed accurately from valid written medical or immunisation records.
    • Note: Measles only vaccine given overseas should not be entered as MMR on the Calculator.
  3. Click ‘Enter’ at the end of the row to record the encounter and generate a new data entry line.
  4. Continue until all encounters have been entered then click the ‘Preview’ button to preview the previous history entered, antigens due immediately and a future recommended catch up schedule.
    • Note: Remember to click ‘Enter’ at the end of the row after the final encounter entry or that encounter will not carry over to the preview page and will not be included when the recommendations are calculated.
    • Note: Encounters entered out of date order will be displayed in date order on the preview page and final recommendations page.
  5. If the child’s details are incorrect or incomplete on the preview page, click the ‘Return to data entry page’ button and edit the child’s details or vaccination history as required.
    • Note: Editing the child’s DOB, state of residence or ATSI status will cause encounters already entered to be cleared. This ensures that the date validation rules can operate correctly.
  6. If the immunisation history entered is incorrect or incomplete on the preview page, click the ‘Return to data entry page’ button and click the pencil at the end of a row to edit that encounter or click the red cross to delete that encounter. When changes are made and saved, click the ‘Preview’ button to preview the recommended catch up schedule.
  7. If no further changes are required, click the ‘Finalise’ button to move to the final recommendations screen.
  8. From the final screen, the recommendations may be printed or saved directly as a PDF file.
  9. Click the ‘New calculation’ button to return to the data entry page and commence a new catch up schedule.

  1. The ‘Future Schedule’ is based on minimum catch up dose intervals as per the Australian Immunisation Handbook. Doses can be given at later dates, but not earlier.
  2. The Calculator recommends catch up doses based on the Australian NIP schedule and applicable catch up criteria.
  3. The recommended ‘Future Schedule’ assumes that the catch up will commence on the same day the calculation is produced and on giving all antigens ‘Due Immediately’ on that day.
  4. If there is a delay in commencing the catch up schedule, a new calculation should be undertaken on the day the child does present to ensure the minimum intervals between antigen doses are met and the recommendation remains current.
  5. If a child does not present on the recommended future dates, a new calculation should be undertaken at each visit to ensure the minimum intervals between antigen doses are met and the recommended schedule remains current.      
  6. Note: Depending on the age of the child, previous history and time delay, the number of doses of some antigens due and the order of giving them may be different from the original calculation.  

  7. If the parent will not accept all antigens ‘Due Immediately’ at the first encounter, a new calculation should be undertaken at each visit to ensure that minimum intervals are met and the recommended schedule remains current.  
  8. When all antigens in an Infanrix Hexa are due within 28 days of each other and at least one dose of each of those antigens has previously been given, the Calculator will group them together and bring them down to the latest date that any of the antigens are due.
  9. When Meningococcal C (MenCCV) and all Infanrix Hexa antigens are ‘Due Immediately’, the Calculator will not defer the MenCCV due date.
    • Note: Clinical assessment and judgement is required in regards to deferral of MenCCV and use of Menitorix (combination Hib / MenC) vaccine in catch up, particularly where further dose/s of Haemophilus Influenzae Type B (Hib) are required. Click HEREHERE to access guidelines for use of Menitorix in catch up schedules
    From 1 December 2017, when the Calculator recommends Men CCV as due, children in the Northern Territory will receive Nimenrix®(Men ACWY) and Hiberix® (Hib), where Hib is also due, instead of Menitorix (MenC/Hib) due to schedule changes at the 12 month age point in the Northern Territory.

  1. Accurate data entry is essential.                                          
  2. Using Num Lock and the numeric keypad can assist with data entry.
  3. TAB can be used to move from field to field.
  4. SHIFT + TAB will move backwards.
  5. TAB + spacebar can be used to move to and select antigens.