Some racial disparities in health care access stem from a lingering distrust of the health care system because of previous exploitation of racial minorities, such as was seen during the Tuskegee syphilis study. Other disparities occur because of inconsistencies in care across racial groups, something which may be more of an issue in this case. It is also possible that physicians could be mentioning the vaccine at the same low levels across racial groups, but that some groups could be more proactive about seeking out the vaccine as an early intervention. It's one thing to say "yes" to a vaccine that is being offered, and an entirely different thing to be wiling to ask a doctor for something that he hasn't brought up. That takes a comfort with the healthcare system and a willingness to question authority that is understandably difficult to develop in populations who are historically under-served... and who are often under-insured as well.

