When Broome nurse Rebecca Smith leaves Gaza in a few weeks, no-one will be able to come in and replace her after Israel announced it would stop Doctors Without Borders from working in the enclave.
Doctors Without Borders — often referred to as MSF for its French name Médecins Sans Frontières — is one of a number of NGOs the Israeli government is banning from operating in Gaza from February 28.
The banned organisations failed or refused to comply with new registration rules, including handing over staff lists.
In a statement, MSF said it "did not hand over staff names because Israeli authorities failed to provide the concrete assurances required to guarantee our staff's safety, protect their personal data, and uphold the independence of our medical operations".
"This is a pretext to obstruct humanitarian assistance. Israeli authorities are forcing humanitarian organisations into an impossible choice between exposing staff to risk or interrupting critical medical care for people in desperate need.