ABSTRACT
Background: In some settings in Saudi Arabia, many healthfacilities offer immunization without adequate knowledge ofvaccine administration and management. This may causepossible administration of nonpotent vaccines to thepopulation.Objectives: To assess cold chain system in immunizationclinics in in a sample of governmental primary health carecenters (PHCC) nurses in Makkah and to identify factorsassociated with the cold chain system.Subjects and Methods: This cross-sectional study wasconducted in Makkah city, Saudi Arabia. It included all nursesworking at immunization clinics. Self-administeredquestionnaire was adopted and modified by the researcherfrom many references, mainly PHC administrations in Jeddahand Makkah. Furthermore, the researcher reviewedquestionnaire from WHO.Results: All nurses had full marks in the knowledge test.Younger age group, graduates of Health College and lowernumbers of years of experiences were found to have betterpractice regarding cold chain. Some nurses failed to practicewhat they knew; they were older age group and graduatedfrom nurse institution.Conclusion: This study concluded that all nurses ofimmunization clinics who worked in primary health care centersin Makkah were excellent in their knowledge (100%) andpractice (>90%).