Reducing Breast Cancer Disparities with Precision Public Health: A New Strategy to Improve Prevention and Advance Health Equity in Delaware Hotspots.

While Black and White women are diagnosed with breast cancer (BC) at similar rates, Black women die from BC at a 40% higher rate. This disparity is even more pronounced for younger Black women, who die from BC at nearly twice the rate as younger White women. Black-White differences in BC mortality are largely attributable to health care and tumor biology factors. Black women face greater barriers to accessing BC screening and are twice as likely to be diagnosed with the aggressive triple-negative breast cancer (TNBC) subtype. Delaware leads the US for the incidence of late-stage BC diagnosed among younger women and TNBC. This commentary begins with a discussion of precision public health, an emerging framework that builds on and complements recent advances in precision medicine. Next, a new precision public health initiative designed to reduce BC disparities in Delaware by targeting local hotspots with prevention interventions is presented. Finally, next steps are considered for implementation, evaluation, and new research activities.