The course of COVID-19 in allergic rhinitis patients receiving allergen spesific immunotherapy

ABSTRACT

Background: The aims of presenting study were trying to expose the course of SARS-CoV- 2 (severeacute respiratory syndrome-related coronavirus) in patients with allergic rhinitis (AR),to compare the prevalence of SARS-CoV- 2 infection, hospitalization and pneumoniarates in patients with AR receiving allergen immunotherapy (AIT) and patients did notreceiving AIT (non-receivers) and to define possible risk factors for SARS-CoV- 2positivity in patients with AR. Method(s) A total of 419 patients with AR who were being followed- up in a tertiary allergy clinicbetween 1 June 2020 and 31 December 2020, were selected for the study. Onlypatients who were receiving active-continuous treatment for allergic rhinitis during thestudy period, were included in the study. Result(s) Seventy-nine patients (18.9%) became infected with the SARS-CoV- 2 [32 patients(19.6%) in AR patients with AIT and 47 patients (19.0%) in non-receivers] and the rateof pneumonia was 2.4% [12.7% of SARS-CoV- 2 (+) patients]. There was no significantdifference was determined between the AR patients with AIT and the non-receivers inregard of the rate of SARS-CoV- 2 infection, pneumonia and hospitalization (p 0.864, p 0.081, p 0.113). There was a significant difference between the groups in terms ofgender, duration of disease, sensitivity to allergens (atopy) and serum IgE levels (p0.009, p 0.001, p 0.001 and p 0.001). The accompanying comorbidities, eosinophilcount, AIT and duration of AIT were not found to be associated with an increased riskSARS-CoV- 2 PCR positivity. However, female gender was shown to be associatedwith an decreased risk for SARS-CoV- 2 PCR positivity (OR, 0.571;95% confidenceinterval, 0.330-0.987;p 0.045) Conclusion(s) The course of SARS-CoV- 2 is similar in patients with AR who underwent AIT andpatients with AR who did not undergo AIT, and AIT does not seem to increase the riskfor SARS-CoV- 2 infection.