ArticleThe Journal of allergy and clinical immunology2025
Impact of nasal and inhaled corticosteroids on SARS-CoV-2 infection susceptibility.
Article in The Journal of allergy and clinical immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIt is unknown whether nasal corticosteroid (NCS) or inhaled corticosteroid (ICS) use impacts the susceptibility to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.
objectivesWe sought to examine the associations of NCS and ICS use with the risk of SARS-CoV-2 infection among individuals with allergic rhinitis or asthma.
methodsThis is a prospective, multicenter, SARS-CoV-2 surveillance study of households with children. Nasal swabs were obtained from participants every 2 weeks with additional collections based on coronavirus disease 2019-related symptoms. In our primary adjusted models, we examined the association of NCS or ICS use at study entry (in participants with allergic rhinitis or asthma, respectively) with the time to the first SARS-CoV-2-positive quantitative PCR testing using Cox proportional hazard regression.
resultsThere were 2211 participants in the 1113 households included. The associations of NCS and ICS use with the risk of SARS-CoV-2 infection were modified by age (P for both interactions <.05). NCS and ICS use were individually associated with higher risks of SARS-CoV-2 infection among adults (adjusted hazard ratio [aHR] = 1.88, 95% CI: 1.14-3.12, P = .01, and aHR = 2.15, 95% CI: 1.003-4.63, P = .049, respectively). The association of NCS use with the risk of SARS-CoV-2 infection in adults was consistent in a series of sensitivity analyses. There was no association of NCS or ICS use with the risk of SARS-CoV-2 infection in children.
conclusionOur findings suggest that the risk of SARS-CoV-2 infection is increased in adults who use NCS but not in children. Similar, albeit less consistent, age-dependent findings were observed for ICS use. While the results of this observational study should be interpreted with caution, they emphasize the need to conduct studies to understand potential mechanisms that could explain these findings.
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