The Master of Arts in Public Health Biology (MAPHB) at the Johns Hopkins Bloomberg School of Public Health is a fully online, flexible, part-time program designed for working professionals. This interdepartmental degree emphasizes modern biological principles and research methods across biological sciences. Students gain concrete training in public health biology with advanced coursework from departments including Biochemistry and Molecular Biology, Environmental Health and Engineering, and Molecular Microbiology and Immunology. The curriculum is tailored to prepare graduates to identify, treat, and prevent health conditions on local, national, and global scales. Students receive 1-on-1 faculty mentorship and complete a literature-based thesis, making it ideal for those seeking to deepen or shift their career focus in the public health biology field.