Assess the current level of knowledge, attitudes, and practices regarding routine and optional vaccines among People age 15-60 years old in Bangkok : Implications for Public Health Policy
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Abstract
Vaccination is one of the most effective and cost-efficient public health measures for reducing morbidity and mortality from preventable infectious diseases. Although Thailand’s National Immunization Program provides free basic vaccines to the public, the uptake of optional vaccines among adults remains relatively low. This study aimed to assess the levels of knowledge, attitudes, and practices (KAP) regarding vaccination among individuals aged 15–60 living in Bangkok, as well as to identify factors that predict vaccination behavior. A cross-sectional descriptive study was conducted using structured online questionnaires completed by 372 participants. The questionnaire was validated for content accuracy and reliability. Results showed that most participants had good levels of knowledge, positive attitudes, and appropriate vaccination behaviors. Multiple regression analysis revealed that monthly household income, attitudes toward vaccination, and knowledge about vaccines were statistically significant predictors of vaccination behavior. These findings highlight the need to develop strategies that enhance vaccine accessibility, reduce economic barriers, and promote vaccine literacy among the adult population to maintain high and sustainable vaccination coverage.
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