There is a developing trend in immunizations as more and more parents are choosing to have their kids receive shots one at a time, on an alternative schedule, or not at all. At this point, there’s a lot we don’t know about the safety of an alternative vaccination schedule. A recent study from the Kaiser Permanente Colorado Institute for Health Research published in JAMA Pediatrics, found that nearly half of kids ages 2-24 months who were born between 2004-2008 received some vaccinations late according to the recommended ACIP vaccination schedule. This is one of the first studies to look at the prevalence of alternative vaccination schedules in the U.S. It opens the door for the medical community to continue researching the safety of these different schedules and how they may impact a child’s risk for vaccine preventable diseases.