To the Editor:
We thank Daungsupawong and Wiwanitkit for their comments1 on our work published in a recent issue of the Journal of Allergy and Clinical Immunology: Global and titled “COVID-19 vaccine uptake among young adults: Influence of asthma and sociodemographic factors.”2 In that study, we concluded that COVID-19 vaccine uptake among young adults is lower in individuals from households with lower socioeconomic status and among those with asthma, including uncontrolled asthma.
However, we would like to highlight the comment regarding vaccine data presented in our study, as the data were not self-reported. Information on vaccine uptake was obtained by linkage to the National Vaccination Register using personal identity numbers, with the Public Health Agency of Sweden responsible for the vaccination register. This register is mandatory, which means that all vaccinations against COVID-19 in Sweden are recorded.
Disclosure statement
Supported by grants from the Swedish Research Council; the Swedish Research Council for Health, Working Life, and Welfare; Formas; the Swedish Asthma and Allergy Research Foundation; the Swedish Heart-Lung Foundation; and Region Stockholm (the ALF project, and for cohort and database maintenance).
Disclosure of potential conflict of interest: E. Melén reports personal fees from AstraZeneca, Chiesi, Sanofi, and Novartis outside the submitted work. The rest of the authors declare that they have no relevant conflicts of interest.
References
- 1.Daungsupawong H., Wiwanitkit V. COVID-19 vaccine uptake among young adults and influence of asthma. J Allergy Clin Immunol Global. 2024;3 doi: 10.1016/j.jacig.2024.100231. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Ödling M., Andersson N., Ekström S., Roxhed N., Schwenk J.M., Björkander S., et al. COVID-19 vaccine uptake among young adults: influence of asthma and sociodemographic factors. J Allergy Clin Immunol Global. 2024;3 doi: 10.1016/j.jacig.2024.100231. [DOI] [PMC free article] [PubMed] [Google Scholar]