1.Drivers for decision change in getting vaccinated against COVID-19: A retrospective cross-sectional study
Rosemary R. Seva ; Lourdes Marie S. Tejero ; Bettina Joyce P. Ilagan
Acta Medica Philippina 2026;60(3):60-69
Background:
A certain percentage of the vaccinated population initially did not want to get vaccinated but changed
their minds (from 30% to 70%). By October 2022, World Bank reported that the Philippines had 77.8% COVID-19 vaccination rate. Knowing the factors that changed their decision can help improve the vaccination rate.
Objective:
This survey aimed to identify the factors that influence positive change in vaccination decisions.
Methods:
This survey was conducted in the Philippines among Filipinos aged 18-80 years old between March to April 2022. The dependent variable in the study was decision change, a binary variable coded as 1 for a vaccinated person who changed their decision from no to yes and 0 for an unvaccinated person who did not change their decision from yes to no.
Results:
Age (adjusted odds ratio [aOR] = 0.92, 95% CI = 0.89-0.96) and having a college degree (aOR=11.707,
95% CI=3.23-42.41) are related to changing decisions. Young and college degree holders are likely to change their decisions positively about getting vaccinated. Employer requirement also influences decision change because it affects a person's livelihood. High scores on vaccine confidence (aOR = 1.181, 95% CI = 1.12-1.25) and awareness (aOR = 1.318, 95% CI = 1.08-1.61) are associated with decision change.
Conclusion
Being young, educated, employed with a requirement to vaccinate, and having high vaccine awareness
and confidence are strongly associated with a positive change in the decision to get vaccinated.
Vaccines
;
Vaccination
;
Philippines
;
Awareness
;
Covid-19
2.Measles in Indonesia: Vaccination Coverage and Identified Challenges
Acta Medica Indonesiana 2026;58(1):3-4
Abstract
Measles has re-emerged as a significant public health threat in Indonesia, signaling gaps in immunization coverage and systemic health inequities. Following the disruptions caused by the COVID-19 pandemic, the country has seen a troubling resurgence in cases. This editorial examines the current epidemiological situation, structural barriers to vaccination, and necessary strategies for elimination. In 2025, Indonesia recorded over 63,000 suspected cases, with the trend continuing into 2026. Current vaccination coverage for children aged 12–23 months stands at 73.46%, which is significantly below the 95% threshold required for herd immunity. Key barriers identified include maternal education levels, archipelagic geography, and sociocultural factors such as religious permissibility and safety concerns. Addressing the measles resurgence requires a multi-faceted approach: strengthening routine and catch-up immunization services, addressing social determinants of health, and rebuilding public trust through community engagement. Achieving high coverage is essential to prevent severe clinical complications and protect vulnerable populations.
Measles
;
Measles resurgence
;
Immunization coverage
;
Indonesia
;
Vaccine hesitancy
;
Public health systems
3.COVID-19 vaccine literacy, confidence, and vaccination coverage in two Geographically Isolated and Disadvantaged Areas (GIDAs) in Floridablanca, Pampanga: A descriptive cross-sectional study
Dennise Grace C. Lazam ; Juean Joloue D. Lama ; Azizzah M. Lao ; Mark Brandon G. Lao ; Jerenlyn A. Laxamana ; Kayla Gabrielle C. Lecciones ; Ma. Hannah Sofia R. Magtibay ; Juan Miguel M. Mañ ; ago ; Angelica Mae G. Manalo ; Nicole Ira L. Manere ; Charles Kevin L. Rivera, MD ; Maria Peñ ; afrancia L. Adversario, MD, MSPH ; Maria Milagros U. Magat, MD, MEM
Health Sciences Journal 2026;15(1):23-35
Introduction:
Effective vaccination campaigns have been instrumental in reducing COVID-19 transmission and severe disease outcomes. Despite efforts to improve vaccine accessibility, vaccine literacy and confidence remain important determinants of vaccine uptake. Rural and geographically isolated communities often experience barriers to healthcare access that may affect vaccination coverage. This study aimed to assess COVID-19 vaccination coverage, vaccine literacy, and vaccine confidence among residents of selected Geographically Isolated and Disadvantaged Areas (GIDAs) in Floridablanca, Pampanga.
Methods:
A descriptive cross-sectional study was conducted among 211 residents of Barangays San Ramon and Nabuclod. Data were collected through face-to-face interviews using a translated and pretested questionnaire on vaccine literacy and vaccine confidence. Vaccination records obtained from the Rural Health Unit were reviewed to determine COVID-19 vaccination coverage. Descriptive statistics, including
frequencies and percentages, were used to summarize the data.
Results:
The majority of respondents demonstrated an average level of vaccine literacy (75.8%), while 17.5% exhibited high vaccine literacy. Most respondents also demonstrated positive to very positive vaccine confidence (71.6%). Among the eligible population, 80.5% had completed the primary COVID-19 vaccination series, whereas 19.5% remained unvaccinated. Among those who completed the primary series, only 24.2% had received at least one booster dose.
Conclusion
Residents of the selected GIDAs generally demonstrated average vaccine literacy, positive vaccine confidence, and relatively high primary COVID-19 vaccination coverage. However, low booster uptake and the persistence of unvaccinated individuals highlight the need for sustained health education, improved healthcare accessibility, and targeted community-based interventions. These findings underscore the importance of strengthening vaccine literacy and confidence to support future immunization programs in geographically isolated communities.
COVID-19
;
Rural Health
;
Vaccination coverage
4.ONE (Onwards towards NCD rEduction) Cavite Project: A multisectoral educational approach to cardiovascular risk factor screening and management.
Deborah Ignacia ONA ; Alberto ATILANO ; Marilou ESPIRITU ; Rey-an Nino GARCIA ; Ardith TAN ; David Raymund SALVADOR
Philippine Journal of Cardiology 2026;54(1):77-83
Ischemic heart disease (IHD) remains the most common cause of death while cerebrovascular disease (CVD) is the third most common in the Philippines. IHD and CVD represent complications resulting from prevalent non-communicable diseases (NCDs) and risk factors which present important opportunities for primary and secondary prevention.
This study aimed to pilot a sustainable multisectoral approach for community-based screening and management of cardiovascular (CV) risk factors and determine the effects of a multisectoral collaboration approach on the rate of screening, prevalence and control rates for selected risk factors.
This is a quality improvement project that determines the baseline prevalence and control rates of CV risk factors followed by intense screening efforts with support from private partnerships. The project's core components are: (a) capacity building (b) information dissemination; (c) service provision; and (d) health monitoring. Rates of screening, prevalence and control were monitored over a two-year period.
A total of 94,125 patients were screened through the ONE Cavite Project over two years (January 2021 to December 2022). A total of 61,271 were newly identified as having hypertension (65.1%), 24,069 diagnosed with diabetes mellitus type 2 (25.6%), 29,257 diagnosed to have dyslipidemia (31.1%) and 13,204 smokers (14.0%) were identified.
Intensification of screening was successful in improving identification of individuals with NCDs. The impact of continued educational support for both providers and patients in this study reaffirmed its role as a central component of NCD diagnosis, management and prevention.
Hypertension ; Diabetes Mellitus ; Dyslipidemias ; Myocardial Ischemia ; Primary Prevention
5.ONE (Onwards towards NCD rEduction) Cavite Project: A multisectoral educational approach to cardiovascular risk factor screening and management.
Deborah Ignacia ONA ; Alberto ATILANO ; Marilou ESPIRITU ; Rey-an Nino GARCIA ; Ardith TAN ; David Raymund SALVADOR
Philippine Journal of Cardiology 2026;54(1):77-83
Ischemic heart disease (IHD) remains the most common cause of death while cerebrovascular disease (CVD) is the third most common in the Philippines. IHD and CVD represent complications resulting from prevalent non-communicable diseases (NCDs) and risk factors which present important opportunities for primary and secondary prevention.
This study aimed to pilot a sustainable multisectoral approach for community-based screening and management of cardiovascular (CV) risk factors and determine the effects of a multisectoral collaboration approach on the rate of screening, prevalence and control rates for selected risk factors.
This is a quality improvement project that determines the baseline prevalence and control rates of CV risk factors followed by intense screening efforts with support from private partnerships. The project's core components are: (a) capacity building (b) information dissemination; (c) service provision; and (d) health monitoring. Rates of screening, prevalence and control were monitored over a two-year period.
A total of 94,125 patients were screened through the ONE Cavite Project over two years (January 2021 to December 2022). A total of 61,271 were newly identified as having hypertension (65.1%), 24,069 diagnosed with diabetes mellitus type 2 (25.6%), 29,257 diagnosed to have dyslipidemia (31.1%) and 13,204 smokers (14.0%) were identified.
Intensification of screening was successful in improving identification of individuals with NCDs. The impact of continued educational support for both providers and patients in this study reaffirmed its role as a central component of NCD diagnosis, management and prevention.
Hypertension ; Diabetes Mellitus ; Dyslipidemias ; Myocardial Ischemia ; Primary Prevention
6.Characteristics of immune response induced by mucosal immunization with recombinant adenovirus of Mycobacterium tuberculosis phosphodiesterase.
Ting DAI ; Yanzhi LU ; Ruihua ZHAO ; Huanhuan NING ; Jian KANG ; Leran HAO ; Jialing LI ; Yuxiao CHANG ; Yinlan BAI
Chinese Journal of Cellular and Molecular Immunology 2025;41(1):1-8
Objective The prevalence of drug-resistant Mycobacterium tuberculosis (Mtb) strains is exacerbating the global burden of tuberculosis (TB), highlighting the urgent need for new treatment strategies for TB. Methods The recombinant adenovirus vaccine expressing cyclic di-adenosine monophosphate (c-di-AMP) phosphodiesterase B (CnpB) (rAd-CnpB), was administered to normal mice via mucosal immunization, either alone or in combination with drug therapy, to treat Mtb respiratory infections in mice.Enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of antibodies in serum and bronchoalveolar lavage fluid (BALF). Real-time quantitative PCR was performed to assess the transcription levels of cytokines interferon γ(IFN-γ) and interleukin 10(IL-10) in mouse lungs. Flow cytometry was used to determine the proportions of CD4+ and CD8+ T cell subsets in the lungs and spleens. ELISA was employed to measure the levels of cytokines IFN-γ, IL-2, IL-10, inflammatory factors IL-6, and tumor necrosis factor α (TNF-α) secreted by spleen cells following antigen stimulation. The bacteria loads in the lungs and spleens of Mtb-infected mice were enumerated by plate counting methods. Resluts Intranasal immunization with rAd-CnpB induced high titers of IgG in mouse serum and the production of IgG and IgA in BALF, along with alterations in T lymphocyte subsets in the lungs and spleens. Administration of rAd-CnpB, either alone or in combination with drugs, to Mtb-infected mice significantly increased serum IgG levels as well as IgA and IgG levels in BALF. rAd-CnpB immunization promoted the secretion of CnpB-specific cytokines and inflammatory factors by splenocytes in Mtb-infected mice. However, rAd-CnpB immunotherapy, either alone or combined with drugs, did not significantly affect the bacterial loads in the lungs and spleens of mice with Mtb respiratory infections. Conclusion Mucosal immunization with rAd-CnpB induced significant mucosal, humoral and cellular immune responses in mice, and significantly enhanced CnpB-specific cellular immune responses in Mtb-infected mice.
Animals
;
Adenoviridae/immunology*
;
Mycobacterium tuberculosis/genetics*
;
Mice
;
Female
;
Phosphoric Diester Hydrolases/genetics*
;
Tuberculosis Vaccines/administration & dosage*
;
Tuberculosis/prevention & control*
;
Mice, Inbred BALB C
;
Cytokines
;
Lung/microbiology*
;
Immunization
;
Bronchoalveolar Lavage Fluid/immunology*
;
Immunity, Mucosal
7.Potential impact of adjusting immunization procedure for diphtheria-tetanus-pertussis vaccine on pertussis in clinical practice.
Chinese Journal of Contemporary Pediatrics 2025;27(7):786-791
In recent years, the incidence rate of pertussis in China has been steadily increasing, presenting an increasingly severe challenge for disease prevention and control. To strengthen the immune barrier in the population and effectively curb the spread of pertussis, National Disease Control and Prevention Administration of China and other relevant authorities optimized the immunization procedure for diphtheria-tetanus-pertussis vaccine, with the new procedure implemented in 2025. This adjustment includes three key measures: advancing the initial dose of the vaccine from 3 months to 2 months of age, extending the interval between primary immunization doses from 1 month to 2 months, and adding an extra dose of acellular diphtheria-tetanus-pertussis vaccine at 6 years of age. This article discusses potential changes in the epidemiology and clinical manifestations of pertussis following such adjustments for immunization procedure, and awareness of these changes will facilitate the accurate identification of pertussis cases, which is crucial for evaluating the impact of these adjustments and further optimizing immunization strategies.
Humans
;
Whooping Cough/epidemiology*
;
Diphtheria-Tetanus-Pertussis Vaccine/immunology*
;
Infant
;
Immunization Schedule
;
Child
8.Differences in routine childhood immunization uptake between single and multiple healthcare facility use: the Kochi Adjunct Study of Japan Environment and Children's Study.
Marina MINAMI ; Yoshihiko TERAUCHI ; Masamitsu EITOKU ; Yuki SHIMOTAKE ; Tamami TSUZUKI ; Ryuhei NAGAI ; Nagamasa MAEDA ; Mikiya FUJIEDA ; Narufumi SUGANUMA
Environmental Health and Preventive Medicine 2025;30():51-51
BACKGROUND:
The efficacy of routine childhood immunization depends on timely vaccine uptake and facility use patterns. This study examined the association between pediatric vaccination facility use patterns and routine childhood immunization uptake among children up to age eight years.
METHODS:
As part of the Kochi Adjunct Study of the Japan Environment and Children's Study (JECS), we analyzed data from 1,644 participants whose Maternal and Child Health Handbook photographs were collected in the eighth year of the cohort study. Maternal and Child Health Handbook records determined immunization completion. Participants were categorized into four groups based on pediatric vaccination facility use patterns: single facility use throughout, multiple facility use during the first period, multiple facility use during the second period, and multiple facility use throughout both periods. Maternal and child characteristics were collected via paper-based questionnaires. Associations between facility use patterns, sociodemographic factors, and immunization completion were analyzed using chi-square tests and logistic regression.
RESULTS:
Overall, routine childhood immunization completion was observed in 1,259 (76.6%) participants. Chi-square tests indicated that marital status, educational level, lower parity, never smoking, not attending nursery, and breastfeeding practice for infants aged four months old were significantly associated with routine childhood immunization completion. Single facility use throughout the immunization period was observed in 1,011 (61.5%) participants. Multiple facility use (38.5%) was associated with higher odds of routine childhood immunization incompletion than single facility use. This association was the strongest for those who used multiple facilities throughout the vaccination period (adjusted odds ratio, 1.90; 95% confidence interval, 1.24-2.91).
CONCLUSIONS
Single pediatric facility use was associated with higher routine immunization uptake. Our findings suggest that encouraging the use of one medical institution for a child's vaccinations may be a useful approach to consider when addressing vaccination coverage challenges.
Humans
;
Japan
;
Female
;
Male
;
Infant
;
Child, Preschool
;
Health Facilities/statistics & numerical data*
;
Child
;
Vaccination/statistics & numerical data*
;
Adult
;
Immunization/statistics & numerical data*
;
Cohort Studies
;
Infant, Newborn
9.Estimated coverage of vaccines for children in Japan between 2011 and 2022: a descriptive study utilizing nationwide monthly market data.
Environmental Health and Preventive Medicine 2025;30():79-79
BACKGROUND:
Japan lacks comprehensive reports on the nationwide voluntary vaccine coverage. The effectiveness of public subsidies in promoting vaccination has not been fully investigated. Therefore, we aimed to estimate the nationwide coverage of voluntary vaccines, compare it with that of national immunization program (NIP)-included vaccines, and investigate the effectiveness of public subsidies.
METHODS:
We obtained nationwide monthly vaccine market data for rotavirus, Haemophilus influenzae type b (Hib), diphtheria, tetanus toxoid, acellular pertussis, inactivated poliovirus (DTaP-IPV), and mumps vaccines; estimated recipient numbers; and calculated coverage as the proportion of children from October 2011 to March 2022. Regarding the NIP-included vaccine, we compared vaccine coverage calculated from nationwide annual market data with that estimated by World Health Organization (WHO)/United Nations Children's Fund (UNICEF), using Bland-Altman analysis.
RESULTS:
The estimates of Hib and DTaP-IPV vaccine coverage derived from market data were slightly higher than the WHO/UNICEF estimates, with mean differences of 0.05 (95% CI: 0.02-0.07) for Hib and 0.03 (95% CI: 0.01-0.05) for DTaP-IPV. The coverage of the rotavirus vaccine gradually increased long before the implementation of national subsidies, reaching 0.9 in 2020. Hib vaccine coverage had already achieved 1.0 by January 2012. The coverage of the DTaP-IPV vaccine was approximately 0.6-0.8 in 2013, reaching 1.0 in 2014. The coverage of mumps vaccine increased gradually from 2011 to 2021.
CONCLUSIONS
Despite the possibility of overestimation, our estimates may serve as a valuable surrogate for actual vaccine coverage in Japan. An increasing trend in rotavirus and mumps vaccine coverage was observed when these vaccines were categorized as voluntary. Although vaccination policies differ from country to country, it would be beneficial to share findings on the impact of subsidies in Japan with other countries.
Japan
;
Humans
;
Vaccination Coverage/statistics & numerical data*
;
Infant
;
Immunization Programs/statistics & numerical data*
;
Rotavirus Vaccines
;
Haemophilus Vaccines
;
Child, Preschool
;
Poliovirus Vaccine, Inactivated
;
Vaccines
10.Effect of COVID-19, vaccination ratio, and human population on the reported canine rabies cases in Davao City, Philippines: A panel regression analysis
Feby Kirstine A. Evangelio ; Sherelyn A. Evangelio ; John Raven C. Macanan ; Zython Paul T. Lachica ; Arlene P. Lagare ; Ma. Noreen J. Eng ; Maria Corazon B. Sepulveda ; Emmanuel S. Baja ; May Anne E. Mata
Acta Medica Philippina 2025;59(4):56-64
OBJECTIVE
Given that rabies remains endemic in the Philippines despite government interventions and the pandemicrelated restrictions have hampered its surveillance, this study aimed to estimate the effect of human population, anti-rabies vaccination efforts, and COVID-19 situation on the spread of rabies cases in the districts of Davao City, Philippines.
METHODSA retrospective study of the canine records at Davao City Veterinarians’ Office was done from January 2018 to June 2021. Monthly rabies cases were ascertained, and the effect of the human population, COVID-19 season, and vaccination ratio on rabies cases was estimated using panel regression models adjusting for confounding factors.
RESULTSThe reporting of rabies cases was lower during COVID-19 than during the non-COVID-19 season, with an IRR of 0.52 [95% confidence interval (CI): 0.33–0.82]. Furthermore, rabies cases increased by 2.23% (95% CI: 0.60–3.89) per 1% increase in vaccination ratio. Additionally, high-population districts recorded more rabies cases than low-population districts.
CONCLUSIONConsistency in monitoring rabies cases during the pandemic is suggested as a roadmap for future program initiatives. Vaccination efforts should be reinforced to increase rabies awareness and ensure early response to emerging diseases. Moreover, highpopulated districts should be prioritized in implementing rabies control interventions to gain optimal development.
Human ; Animals ; Rabies ; Covid-19 ; Vaccination


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