ABSTRACT Objective: to construct and validate an orientation video, based on a low-fidelity clinical simulation scenario, to prevent immunization errors. Methods: a methodological study with video construction, validated in two stages by different audiences. Content was selected based on a realistic simulation scenario of the vaccine administration process to a patient-actor. Items with concordance greater than 0.8 and 0.6 were considered valid, verified using the Content Validity Index (CVI) and the Content Validity Ratio (CVR), respectively. Results: judges’ CVI had an average of 97.5%, and CVR, 0.9, and health professionals’ CVI, 95.4%, and CVR, 0.8. Successes in administering vaccines were addressed, such as careful reading of labels, double-checking the vaccine, distractions/interruptions and error reporting. Conclusions: the video was constructed and validated in terms of content, and can be used in training professionals working in vaccination.