She is the President of the Gender Equality Division and Director of Vaccine Development, Global Health Surveillance, Diarrhea and Enteric Diseases at the Bill & Melinda Gates Foundation.

[2] Whilst visiting a cousin in the United Kingdom Zaidi became interested in microbiology and applied to work in a clinical commercial laboratory.

[3] During her degree she enjoyed her courses in community health and spent time working in the Pakistan’s urban squatter settlements (katchi abadis).

[1][4][5] After graduating Zaidi worked on a United States Agency for International Development program in remote northern Pakistani territories (now Gilgit-Baltistan), which inspired her to dedicate her career to global public health.

[1][5] Her project involved establishing a community surveillance program for diarrhoeal disease and to identify what infrastructure the Aga Khan Health Services needs to implement to improve healthcare.

She was one of the youngest faculty members to be promoted to full Professor when she became Chair of the Department of Paediatrics and Child Health at Aga Khan University.

Her efforts focussed on eliminating malnutrition, improving access to healthcare and vaccinations and training for community health professionals.