Samoa's Prime Minister has called for nurses to be well trained, in light of last month's deaths of two babies after they received the MMR vaccine.
Tuila'epa Sa'ilele Malielegaoi said the post mortem preliminary report did not find anything wrong with the vaccine but human error seemed to be involved in the diluting of the vaccine.
The prime minister said further overseas analysis is being sought to confirm the preliminary results.
Two nurses are facing manslaughter charges in the case with one of them also charged with conspiracy to defeat the course of justice and negligence.
The two will appear in the Supreme Court on Monday.