FAQ – Vaccine Schedules and Missed Doses
Where can I find the recommended vaccine schedule for my age?
The recommended schedule depends on age and, sometimes, health conditions or pregnancy. The easiest starting point is the official immunization schedule by age. If you want help interpreting the schedule for your situation, contact your health care provider or the Immunization Program.
What if my child is behind on vaccines?
You can still catch up. Health care providers use a “catch-up schedule” to get children back on track safely. In most cases, your child does not need to restart a vaccine series.
Do we have to restart a vaccine series if we missed doses?
Usually no. If a dose is late, you typically just get the next dose as soon as possible. Your provider will follow the recommended minimum intervals between doses.
How long can we wait between doses?
Many vaccines have recommended timing, but if you’re late, you can usually continue where you left off. The key is waiting the minimum time between doses so your immune system can respond. Your provider will schedule the next dose based on age and minimum intervals.
Can my child get multiple vaccines at the same visit?
Yes. Giving multiple vaccines at one visit is common and helps children get protected sooner. It also reduces the number of visits needed to complete the schedule. Your provider can review which vaccines are due and answer questions.
Why are some vaccines given in a series of multiple doses?
Some vaccines need more than one dose to build strong protection, and some need booster doses to keep protection high over time. Each dose helps strengthen or extend immunity.
What if we missed a well-child visit and my child is due for several shots?
That is a common situation. Your provider can plan a catch-up schedule and may use combination vaccines when appropriate to reduce the number of injections while staying within guidelines.
Can vaccines be given early, like before school starts or before travel?
Sometimes. There are minimum age and timing rules for certain vaccines. If you are on a deadline for school, childcare, or travel, call ahead and let the clinic know so they can plan appropriately.
What if my child is sick? Should we reschedule vaccines?
Mild illness, like a cold or low fever, is usually not a reason to delay vaccines. If your child is more seriously ill, you may need to wait. If you’re unsure, call your provider or clinic and let them know your symptoms.
What if we missed vaccines because we moved, lost insurance, or had trouble getting appointments?
You are not alone. Vaccination can often be resumed without restarting series. Low-cost or free options may be available, and pharmacies may offer some routine vaccines. Use My Turn to find locations, and contact the Immunization Program if you need help navigating options.
How do I know which vaccines I already had?
Start with your vaccination record. You may be able to access your record through the CDPH Digital Vaccine Record. You can also check with your doctor’s office, your pharmacy, your child’s school or childcare records, or prior clinics.
What if I cannot find records? Do I need to repeat shots?
Sometimes providers can use blood tests for certain diseases to check immunity, but that is not available for every vaccine. In many cases, repeating doses is safe and may be recommended when records cannot be located. Your provider can advise based on age, risk, and what documentation is missing.
What is the difference between “recommended” and “required” vaccines for school or childcare?
Recommended vaccines protect health and help prevent outbreaks. Required vaccines are those California requires for school or childcare entry (with limited exceptions). A child may be up to date on required vaccines but still have other recommended vaccines for added protection.
Where should I go if I have questions about a specific vaccine timing, like pregnancy or immunocompromised conditions?
Timing can change based on pregnancy, immune system conditions, or certain medications. Talk with your health care provider, or contact the Immunization Program for general guidance and resources.