 This study aimed to evaluate the external validity of the parental attitude toward childhood vaccination, PACV, scale by comparing it to data collected from seven countries. The results showed that the PACV scale had good calibration and discrimination when applied to the data collected from these countries. Additionally, the scale was found to be transportable and could be used to assess attitudes towards influenza vaccination among parents in different countries. This article was authored by Rami Mohamed Gazi, Sally Waheed Al-Qadri, Susan Abdelraman, and others.