Neurologic complications of vaccine-preventable diseases in children.

PURPOSE OF REVIEW: The coronavirus disease 2019 pandemic, shifting health policy and increasing vaccine hesitancy have all increased the likelihood healthcare practitioners will encounter vaccine-preventable diseases in children. Both front-line and consulting clinicians need to be able to identify these previously rare diseases and their neurologic complications, particularly in un- or under-vaccinated children. RECENT FINDINGS: As diseases previously considered rare or eliminated reemerge, more is known about direct and indirect consequences of peripheral and central nervous system infection in children-both in general and specific to individual vaccine-preventable diseases. Primary and secondary neurologic complications can be acute, subacute, chronic, or arise years later. Advances in imaging and molecular identification along with better understanding of underlying disease pathophysiology can all aid earlier identification, treatment, prognostication, and recovery. SUMMARY: While the benefits of childhood vaccination programs clearly outweigh the risks for the majority of children, in light of current realities the goal of this guide is to better prepare front-line and consulting clinicians to identify and manage vaccine-preventable diseases and their neurologic complications in un- or under-vaccinated children as they increasingly encounter them now and in the future.