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Journal : Narra J

Comparison of anti-SARS-CoV-2 IgG seropositivity among vaccinated, unvaccinated, and COVID-19 survivor individuals: A cross-sectional study in Palembang, Indonesia Retnaningsih, Ekowati; Nuryanto, Nuryanto; Oktarina, Reni; Komalasari, Oom; Maryani, Sri; Larasti, Veny; Fertilita, Soilia
Narra J Vol. 5 No. 3 (2025): December 2025
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v5i3.2890

Abstract

Measurement of anti–severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) immunoglobulin G (IgG) antibody levels provides evidence of prior infection or vaccination. Persistent vaccine hesitancy underscores the importance of robust, evidence-based data to inform policy decisions. The aim of this study was to compare anti-SARS-CoV-2 IgG seropositivity among vaccinated individuals, unvaccinated individuals, and coronavirus disease 2019 (COVID-19) survivors in the community during the pandemic. In this cross-sectional study, 517 participants were enrolled, including 167 vaccinated individuals, 97 COVID-19 survivors, and 253 unvaccinated individuals, selected through multistage cluster sampling of 40 clusters. Anti-SARS-CoV-2 IgG seropositivity was defined as ≥50 AU/mL. Multivariable logistic regression was performed to evaluate associations between group type and seropositivity, adjusting for demographic factors, COVID-19 symptoms, hypertension, and body mass index (BMI). Vaccinated individuals demonstrated significantly higher odds of seropositivity compared with unvaccinated participants (odds ratio (OR)=5.60; 95% confidence interval (CI): 2.36–13.27). Covariates independently associated with seropositivity (p<0.05) included the presence of COVID-19 symptoms, hypertension, and BMI. Vaccination was strongly associated with increased anti-SARS-CoV-2 IgG seropositivity in the community, independent of clinical and demographic factors. These findings support ongoing vaccination campaigns and highlight the relevance of comorbidities and symptomatic history in shaping humoral immune responses.
Co-Authors - Ardiansyah, - -, Lolytasari Ali, Waleed Amil, Amil Arfah, Arfah Ari Wardayani, Ari Ariadhy, Suseno Arrahman, Rudi Artawan Gede Astriani, Aveny Septi Bukman Lian, Bukman Cahyo, Bagas Dwi Dewi Rosanti, Dewi Diah Setyorini Gunawan Dian Mutiara, Dian Dwi Anggraeni Dwi Rohman Soleh, Dwi Rohman Ekowati Retnaningsih Ertinawati, Yuni Erwin Erwin Fertilita, Soilia Guswanto, Bambang Hendriya Hakim, Fikri Halim, Nurfadhlina Abdul Hamdi Hamdi Hendi Efendi, Hendi Husnul, Nisatami Ichsan Fauzi Rachman Icuk Rangga Bawono, Icuk Rangga Idha Sihwaningrum Jajang Jajang Jamilah, Ai Siti Nur Juwita, Diana karenina, Tili Kharisa, Aflakha Kulsum, Dewi Ummu Kusumasari, Wardany Larasti, Veny Limbar Jaya, Futu Widiana Mariani, Dini Martha Nengah Mufreni, Sadr Lufti Mugi Lestari, Mugi Mulki Indana Zulfa, Mulki Indana Munawwaroh, Zahrotul Neni Marlina Novriadhy, Dian Nunung Nurhayati Nunung Nurjanah Nurjamilah, Ai Siti Nurmiwati, Nurmiwati Nuryanto Nuryanto Oom Komalasari Pardomuan Robinson Sihombing Parji Parji Patimah, Siti Papat Pitrianti, Siti Primasari, Dwi Ammelia Galuh Purwantho, Herry Puspita, Shafa Nanda Qonitah Faizatul Fitriyah Rahman, Ichsan Fauzi Reni Oktarina Rifda Naufalin Rizqi, Safina Sabila ROHANA ROHANA Rusdi Machrizal Sardjono, Herning Suryo Sheilliarika, Wella Ayu Suhada, Dede Bagus Sulasih Sulasih Suparmanto Supriyanto Supriyanto Suroto Suroto Suwardi Suwardi Suyasa, Made Thursina, Mulyani Titin Setiartin, Titin Triyanna Widiyaningtyas Weni Novandari Wijayanto, Danur Wulandari, Ratna Rizky Yasinta, Tia Yayat Suryati Yogaswara, Angga Zaenafi, Zaenafi Zahratunnisa, Siti Fauziah