The role of candidate microRNAs in the T cell response during acute and latent tuberculosis; to determine the exact immunological role played by microRNAs in TB infection.

Tuberculosis Drug Resistance Survey; to determine drug resistance profiles of patients with pulmonary tuberculosis in Ghana.

Type II diabetes (T2DM) and obesity among sub-saharan African natives and migrant populations to determine the socioeconomic as well as genetic factors predisposing to T2DM.

Mansonella perstans co-infection with mycobacterium infection; to determine immunological factors that determines severity of mycobacterium co-infection with Mansonella perstans

Severe typhoid in Africa; to estimate the burden and severity of invasive salmonellosis; report the sequalae and associated cost of illness; and assess the immune response to natural infection.

To investigate the total protection conferred by single-dose vaccination with Typbar-TCV^®against blood culture-confirmed symptomatic S. Typhi infection