Border Health Security Act of 2003

Border Health Security Act of 2003 - Directs the Secretary of Health and Human Services, acting through the United States members of the United States-Mexico Border Health Commission (the members), to award grants to eligible entities (as defined by this section) to address priorities and recommendations to improve the health of border residents that are established by the Secretary, the members, and the State border health offices. Sets forth uses for grant funds, including for programs relating to: (1) maternal and child health; (2) substance abuse; and (3) environmental health.

Directs the Secretary to award grants to eligible entities (as defined by this section) for bioterrorism preparedness in the border area. Sets forth uses for grant funds, including for the: (1) improvement of infrastructure; and (2) education and training of clinicians, epidemiologists, laboratories, and emergency personnel.

Allows the Secretary to coordinate with the Secretary of Homeland Security a health alert system that: (1) alerts clinicians and public health officials of emerging disease clusters and syndromes along the border area; and (2) is alerted to health threats or bioterrorism along the border area.