Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population

Background: Vaccination has played a crucial role in mitigating the spread of COVID-19 and reducing its severe outcomes. While over 90% of Bangladesh’s population has received at least one COVID-19 vaccine dose, the comparative effectiveness of homologous versus heterologous booster strategies, alon...

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Main Authors: Kazi Istiaque Sanin, Mansura Khanam, Azizur Rahman Sharaque, Mahbub Elahi, Bharati Rani Roy, Md. Khaledul Hasan, Goutam Kumar Dutta, Abir Dutta, Md. Nazmul Islam, Md. Safiqul Islam, Md. Nasir Ahmed Khan, Mustufa Mahmud, Nuzhat Nadia, Fablina Noushin, Anjan Kumar Roy, Protim Sarker, Fahmida Tofail
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Vaccines
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Online Access:https://www.mdpi.com/2076-393X/13/1/67
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author Kazi Istiaque Sanin
Mansura Khanam
Azizur Rahman Sharaque
Mahbub Elahi
Bharati Rani Roy
Md. Khaledul Hasan
Goutam Kumar Dutta
Abir Dutta
Md. Nazmul Islam
Md. Safiqul Islam
Md. Nasir Ahmed Khan
Mustufa Mahmud
Nuzhat Nadia
Fablina Noushin
Anjan Kumar Roy
Protim Sarker
Fahmida Tofail
author_facet Kazi Istiaque Sanin
Mansura Khanam
Azizur Rahman Sharaque
Mahbub Elahi
Bharati Rani Roy
Md. Khaledul Hasan
Goutam Kumar Dutta
Abir Dutta
Md. Nazmul Islam
Md. Safiqul Islam
Md. Nasir Ahmed Khan
Mustufa Mahmud
Nuzhat Nadia
Fablina Noushin
Anjan Kumar Roy
Protim Sarker
Fahmida Tofail
author_sort Kazi Istiaque Sanin
collection DOAJ
description Background: Vaccination has played a crucial role in mitigating the spread of COVID-19 and reducing its severe outcomes. While over 90% of Bangladesh’s population has received at least one COVID-19 vaccine dose, the comparative effectiveness of homologous versus heterologous booster strategies, along with the complex interplay of factors within the population, remains understudied. This study aimed to compare antibody responses between these booster approaches. Methods: This cross-sectional study enrolled 723 adults in urban Dhaka who had received COVID-19 booster doses within the last six months. Participants were grouped based on homologous or heterologous booster vaccination. Data were collected through structured household surveys, and 2 mL blood samples were collected for measuring antibody titers. Results: Heterologous booster recipients showed higher median antibody titers (8597.0 U/mL, IQR 5053.0–15,482.3) compared to homologous recipients (6958.0 U/mL, IQR 3974.0–12,728.5). In the adjusted analysis, the type of booster dose had no significant impact on antibody levels. However, the duration since the last booster dose was significantly associated with antibody levels, where each additional month since receiving the booster corresponded to approximately a 15–16% reduction in antibody levels (Adj. coeff: 0.85, 95% CI: 0.81, 0.88; <i>p</i> < 0.001). Participants over 40 years demonstrated higher antibody levels than younger individuals (Adj. coeff: 1.23, 95% CI: 1.07, 1.43; <i>p</i> = 0.005). Sex, BMI, and prior COVID-19 infection showed no significant associations with antibody levels after adjustment. Conclusion: The results underscore the complexity of immune responses across different demographic groups and suggest potential benefits of ongoing heterologous booster strategies in sustaining immunity.
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spelling doaj-art-d9ae74a24e3f4bb398284695ca8627fa2025-01-24T13:51:50ZengMDPI AGVaccines2076-393X2025-01-011316710.3390/vaccines13010067Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi PopulationKazi Istiaque Sanin0Mansura Khanam1Azizur Rahman Sharaque2Mahbub Elahi3Bharati Rani Roy4Md. Khaledul Hasan5Goutam Kumar Dutta6Abir Dutta7Md. Nazmul Islam8Md. Safiqul Islam9Md. Nasir Ahmed Khan10Mustufa Mahmud11Nuzhat Nadia12Fablina Noushin13Anjan Kumar Roy14Protim Sarker15Fahmida Tofail16International Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshCommunicable Disease Control (CDC), Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani, Dhaka 1212, BangladeshBackground: Vaccination has played a crucial role in mitigating the spread of COVID-19 and reducing its severe outcomes. While over 90% of Bangladesh’s population has received at least one COVID-19 vaccine dose, the comparative effectiveness of homologous versus heterologous booster strategies, along with the complex interplay of factors within the population, remains understudied. This study aimed to compare antibody responses between these booster approaches. Methods: This cross-sectional study enrolled 723 adults in urban Dhaka who had received COVID-19 booster doses within the last six months. Participants were grouped based on homologous or heterologous booster vaccination. Data were collected through structured household surveys, and 2 mL blood samples were collected for measuring antibody titers. Results: Heterologous booster recipients showed higher median antibody titers (8597.0 U/mL, IQR 5053.0–15,482.3) compared to homologous recipients (6958.0 U/mL, IQR 3974.0–12,728.5). In the adjusted analysis, the type of booster dose had no significant impact on antibody levels. However, the duration since the last booster dose was significantly associated with antibody levels, where each additional month since receiving the booster corresponded to approximately a 15–16% reduction in antibody levels (Adj. coeff: 0.85, 95% CI: 0.81, 0.88; <i>p</i> < 0.001). Participants over 40 years demonstrated higher antibody levels than younger individuals (Adj. coeff: 1.23, 95% CI: 1.07, 1.43; <i>p</i> = 0.005). Sex, BMI, and prior COVID-19 infection showed no significant associations with antibody levels after adjustment. Conclusion: The results underscore the complexity of immune responses across different demographic groups and suggest potential benefits of ongoing heterologous booster strategies in sustaining immunity.https://www.mdpi.com/2076-393X/13/1/67COVID-19homologous and heterologous vaccinationCOVID-19 booster vaccinationsBangladesh
spellingShingle Kazi Istiaque Sanin
Mansura Khanam
Azizur Rahman Sharaque
Mahbub Elahi
Bharati Rani Roy
Md. Khaledul Hasan
Goutam Kumar Dutta
Abir Dutta
Md. Nazmul Islam
Md. Safiqul Islam
Md. Nasir Ahmed Khan
Mustufa Mahmud
Nuzhat Nadia
Fablina Noushin
Anjan Kumar Roy
Protim Sarker
Fahmida Tofail
Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
Vaccines
COVID-19
homologous and heterologous vaccination
COVID-19 booster vaccinations
Bangladesh
title Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
title_full Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
title_fullStr Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
title_full_unstemmed Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
title_short Comparing Antibody Responses to Homologous vs. Heterologous COVID-19 Vaccination: A Cross-Sectional Analysis in an Urban Bangladeshi Population
title_sort comparing antibody responses to homologous vs heterologous covid 19 vaccination a cross sectional analysis in an urban bangladeshi population
topic COVID-19
homologous and heterologous vaccination
COVID-19 booster vaccinations
Bangladesh
url https://www.mdpi.com/2076-393X/13/1/67
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