Kerry has extensive public health experience, having held senior positions in NSW Health since 1991. Her previous appointments include Director of Health Protection NSW, Deputy Chief Health Officer, and Director of the South Western Sydney Local Health District Public Health Unit.

She has a particular interest in blood-borne virus infections, health equity, communicable diseases prevention and control, and Aboriginal health.

Throughout her career, Kerry has provided leadership and advocacy on key public health issues, including reducing obesity, aiming for the virtual elimination of HIV transmission in NSW, reducing tobacco and vaping harms, and supporting hepatitis C treatment and control.