Effects of implementing a simulation-learning based training using a train-the-trainer model on the acquisition and retention of knowledge about infant safe sleep practices among licensed nurses.

•A train-the-trainer program in simulation and infant safe sleep can positively affect nurses' knowledge about safe sleep and SUID.•A train-the-trainer model with simulation activities had a greater impact among nursing staff regarding knowledge of infant safe sleep practices than relying on established policies and protocols alone.•Hospitals not experienced with simulation can partner with local universities that may have more experience and expertise.