Date of Completion

2024

Document Type

Community Medicine

Degree Name

Doctor of Medicine

Keywords

primary vaccination, COVID-19, booster vaccines, vaccine hesitancy, COVID-19 vaccine booster

Abstract

Despite the high prevalence of completed primary vaccination and the widespread availability of COVID-19 booster vaccines, more than half of fully vaccinated individuals in the Philippines have yet to receive the booster dose. Various studies support the common global phenomenon of vaccine hesitancy, defined as delay in acceptance or refusal of vaccination despite availability of vaccination services (Salam, 2021). A few local studies have been made to examine the vaccine hesitancy phenomenon. However, several determinants affecting the uptake of COVID-19 booster required further studies. Hence, the present study aimed to evaluate the factors affecting the uptake of COVID-19 vaccine booster among adult residents of Dasmarinas City, Cavite. Specifically, the study seeks to examine the (1) sociodemographic profile, (2) COVID-19-related profile, (3) Interpersonal COVID-19-Related Experience, (4) Healthcare and Societal Level, (5) Behavior and Health Beliefs, and Motivators or Promoters Related to the COVID-19 Vaccine booster uptake among adult residents of Dasmarinas, Cavite. Furthermore, the researchers sought to determine the relationship between the uptake of COVID-19 vaccine and sociodemographic and organizational factors about COVID-19 booster among the selected participants. The target population for this study were adult individuals, ages 18 years old and above, residing in Dasmariñas City, Cavite who have completed the primary vaccine dose series against COVID-19. The selection of subjects utilized a nonproportional quota sampling method and applied Fleiss’s formula for the appropriate sample size. The research employed the Quantitative Descriptive Cross-Sectional Design involving qualitative approaches to assess the extent of the relationship between variables through statistical data gathered by means of both web-based (online) and in-person (printed) survey questionnaires. The data was analyzed and interpreted using the Statistical Package for the Social Sciences (SPSS) Software in which descriptive statistics with tabulated percentage and frequency values were used to represent the qualitative data using the Chi-Square Test which ruled out the variables’ independence. Binary logistic regression was conducted to determine the relationship between the COVID-19 booster uptake decision/behavior as the dependent variable and the independent variables under the Sociodemographic and Organizational factors. The following variables were found to be significant factors that affected COVID-19 booster vaccine uptake: efficacy of the vaccine in increasing immunity against COVID- 19, necessity of the booster despite complete primary COVID-19 vaccine series, belief that the booster will reduce prevalence of COVID-19, concern regarding possible adverse effects of the booster, knowledge of COVID-19 infection of friends and family, convenience of the process of vaccination, belief that COVID-19 is real, belief that vaccination will not infect the person with COVID-19, concern regarding the effectiveness of the vaccine, concern regarding fake vaccines, perceived personal risk and infection rate for COVID-19, and vaccination being required for work/school/malls, groceries, and public spaces. No relationship was found between the said predictors. These predictors should be further examined in further studies of larger sample sizes to be able to better assess their relationship and ramifications for COVID-19 vaccine booster uptake.

First Advisor

Dr. Gia Anna Bervano

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