PhD
Epidemiology (Candidate)
Johns Hopkins Bloomberg School of Public Health
Certificates in Vaccine Science & Policy and Clinical Trials
Physician Epidemiologist. Global Health Strategist.
Strategic judgment for science, policy & institutional action.
Trusted across global health, academia & policy
A cross-sector practice shaped by clinical service, epidemiology, emergency preparedness, institutional advising, and public communication.
Education & Training
Epidemiology (Candidate)
Johns Hopkins Bloomberg School of Public Health
Certificates in Vaccine Science & Policy and Clinical Trials
Epidemiology & Biostatistics
Johns Hopkins Bloomberg School of Public Health
Certificate in Pharmacoepidemiology & Drug Safety · Sommer Scholar
Health Technology & Leadership
Johns Hopkins Carey Business School
Beta Gamma Sigma honor society
Medicine & Surgery
University of Ghana School of Medicine & Dentistry
Core expertise
A practice that connects disease intelligence, preparedness, policy, AI, leadership development, and communication.
Rigorous epidemiologic methods clarify risk, burden, surveillance needs, and response priorities.
Health security work connects surveillance, coordination, risk communication, and institutional resilience.
Preparedness becomes practical through response architecture, operating cadence, decision rights, and trusted public communication.
Vaccine evidence, access questions, and delivery systems become usable policy choices.
Applied AI becomes useful when it is connected to evidence, equity, workflow, governance, and real health system decisions.
Mentorship helps students and emerging professionals make clearer decisions about training, careers, and leadership.
Complex evidence becomes language that leaders, institutions, students, and public audiences can use.
A field-tested arc
Clinical training keeps his public health work close to patients, frontline teams, and decisions made under pressure.
At Johns Hopkins, his work spans epidemiology, vaccine policy, evidence synthesis, and the analytical discipline institutions need when stakes are high.
Through WHO AFRO EPR-TAG and related advisory work, he contributes to preparedness, surveillance, response coordination, and risk communication.
Through speaking, writing, podcasting, and mentorship, he helps translate complex health questions into language people can use.
Research & advisory work
His research and advisory work connects health security, vaccine policy, infectious disease epidemiology, and health systems strengthening.
Advisory and leadership work across emergency preparedness, vaccine implementation, public health operations, and health systems strategy.
Research questioning whether preparedness indices predict COVID-19 vaccine rollout and pandemic response performance.
Protocol, data, ethics, and field-site work connected to multi-country surveillance and response questions.
African Member States served through WHO regional advisory scope.
Peer-reviewed publications in global health, epidemiology, and policy journals.
Science, policy & execution
Dr Khalifa works with teams on preparedness, decision-making, and response systems that have to hold under pressure.
Speaking & media
Academic talks, policy forums, advisory settings, creator platforms, and public-facing media share one discipline: evidence made clear for the room.
Preparedness, health systems, science communication, vaccine delivery, and leadership.
The conversation pairs technical detail with strategy, equity, and institutional possibility.
Original essays and conversation for readers who care about health, institutions, leadership, technology, and public life.
Visit Meridian LettersConversation-driven media on health, systems, leadership, and the questions shaping professional and public life.
View mediaMentorship & creator platform
Dr Khalifa's mentoring, writing, and public communication help emerging professionals make better decisions about training, careers, leadership, and public health work.
Public Health & Epidemiology
Selected affiliations
Doctoral scholarship, epidemiology training, public health leadership, and applied research at Johns Hopkins Bloomberg School of Public Health.
Technical advisory work across preparedness, surveillance, emergency response, risk communication, and regional health security.
Front-line medical operations, infection prevention, evacuation coordination, and crisis leadership in complex field settings.
Vaccine delivery strategy and cross-sector coordination supporting national implementation during the COVID-19 response.
Citywide response operations, contact tracing systems, data tracking, and community outreach under operational pressure.
Multi-country surveillance research, protocol development, ethics workflows, data systems, and field-site coordination.
Let's work together
Available for speaking, guest lectures, panels, advisory dialogue, research collaboration, media, and strategic scientific engagement.