Determining the knowledge of primary healthcare (PHC) physicians and factors influencing practices in the implementation of the catch-up vaccination program in PHC clinics in Dammam, Saudi Arabia.

To determine the knowledge of primary healthcare (PHC) physicians and factors influencing implementation of the catch-up vaccination program in PHC clinics in Dammam, Saudi Arabia. Methods: A cross-sectional study was conducted with a sample of 136 general and family physicians between October 2018 and August 2019 in PHC clinics. A self-administered questionnaire related to knowledge, practices, and factors affecting their practices regarding vaccination was given to participants.