Doctor of Medicine, University Nairobi, 1989. M Medical Microbiology, London School Hygiene and Tropical Medicine, 1995. M Public Health, University Washington, 2003.
Assistant research officer Kenya Medical Research Institute, Nairobi, 1992—1995, research officer, 1996—2000, senior research officer, since 2001. Medical intern Ministry of Health, Machakos, Kenya, 1989—1990, medical officer Kenya, 1990—2001.
Married Vincent Mwandima Masawi, April 30, 1994. Children: Harrison Masawi, Gershom Mwachari Masawi.