PROBLEMS with Queensland's MetaVision health software system were first reported 17 months ago, in May 2013, and reported in a departmental brief to the executive director of the Royal Brisbane and Women's Hospital in July 2013.
However, it was not until further "outstanding risks" were identified on October 23, 2014, that they were leaked to Fairfax Media on October 24.
They were confirmed by Health Minister Lawrence Springborg on Sunday, October 26.
However, the 18-month timeline of serious errors - where patients ran the risk of wrong medicines, wrong doses and medicines being given to wrong patients - was not revealed.
Opposition health spokeswoman Jo-Ann Miller said these serious concerns should have been made public.