Lack of access to healthcare is a significant barrier to vaccination uptake because being uninsured, not having a usual source of healthcare, and not seeing a medical practitioner in the past year were associated with lower vaccine uptake. Furthermore, studies conducted during the 2009-2010 influenza season among adults show that having health insurance was associated with vaccine uptake. Addressing access to care is important because without access to care, other approaches to increasing vaccine uptake may not be possible.