Knowledge and Attitudes about Contraindications and Precautions to Vaccination among Healthcare Professionals Working in Vaccination Clinics in Ningbo, China: A Cross-Sectional Survey

Abstract

Background: Healthcare professionals’ misjudgment of contraindications to vaccination can lead to unnecessary delays or missed vaccinations. It is essential to evaluate the knowledge and attitudes of healthcare professionals towards this issue. Methods: A two-phase cross-sectional study was conducted among healthcare professionals in vaccination clinics in Ningbo in 2022. The study data were collected using questionnaires evaluating the knowledge and attitudes of contraindications and precautions to vaccination. Knowledge scores were calculated and a cutoff of 75 was defined for adequate knowledge scores. Results: A total of 761 participants completed the questionnaire on attitudes. The majority of participants (86.20%) considered screening for vaccination contraindications to be the most important aspect of the vaccination administration process. A higher level of work stress was observed among full-time personnel engaged in this work. A total of 301 participants completed the questionnaire on relevant knowledge and practical experience. The median (IQR) total score was 75.00 (21.88). The lowest median score was observed for questions pertaining to disease diagnosis and classification (median: 40.00; IQR: 40.00). Regarding knowledge about vaccination contraindications, the scores for questions regarding national guidelines or vaccine package inserts (median: 85.71; IQR: 14.29) and guidelines from the WHO or ACIP (median: 100.00; IQR: 0.00) were higher than those derived from expert consensuses or literature findings (median: 71.43; IQR: 28.57) (p < 0.001). Higher scores were observed in the age group of 50–59 years, which included those who had received training twice or more times and those with relevant work experience. Conclusions: The knowledge of healthcare professionals working in vaccination clinics related to contraindications and precautions to vaccination is not sufficient, particularly regarding disease diagnosis and classification. Knowledge enhancement through repetitive skill training is required.