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Age Vaccine Information / 4 Months

4 Months

The second scheduled visit of primary vaccinations is at four months of age. This is the second in the series of vaccinations that are given at two, four, and six months.  Your baby will again receive two injections and an oral rotavirus vaccine. The gap between the doses of vaccines is to make sure that each dose has time to work effectively.

These vaccinations are given to trigger your baby’s immune system to produce its own antibodies against the diseases listed on this page. These vaccinations should be recorded in your baby’s Personal Health Record.


  1. National Immunisation Program Schedule (from 20 April 2015, updated 23 February 2016):
  2. Australian Immunisation Handbook 10th edition (updated June 2015):
  3. NCIRS Adult Vaccination factsheet (updated August 2015):