Dr Yaya and his research team focus their work on the following topics: improving access and use of health services in low-and middle-income countries; health systems reform; sociology of health; global health financing; effects of globalization on health; economic evaluation of health interventions; and the interaction between economic development and health care. Building upon the existing literature, his research relies upon long term field observations and primary data collection experiences. Findings from his work can be integrated into future strategy development and large-scale implementation efforts undertaken by different organizations and the wider global health community to improve access to care in less developed countries (LDCs).