en Health economic Original Article <div style="text-align: justify;"><span style="font-size:12px;"><span style="font-family:Times New Roman;"><b>Background:</b> On December 8, 2019, cases of pneumonia from an unknown disease were identified in Wuhan, China. Investigations showed that this disease was COVID-19, caused by the SARS-CoV-2 coronavirus. This study aimed to investigate the prevalence of asthma in patients with COVID-19 and its relationship to asthma severity.<br> <b>Methods:</b> In this cross-sectional study, we obtained patients&#39; data from medical records, including their asthma history, severity, and COVID-19 outcomes (mortality). Logistic regression was used to measure the association between asthma severity and COVID-19 mortality. The collected data were analyzed using SPSS software (version 23).<br> <b>Results:</b> The study showed that asthma was present in 14.4% of the patients with COVID-19. Regarding asthma severity, 61.9%, 16.4%, and 21.6% of the patients had mild, moderate, and severe asthma, respectively. The overall mortality rate among the patients with COVID-19 was 21.42%. There was a significant association between asthma and COVID-19 mortality (p-value = 0.003). However, asthma severity was not related to COVID-19 mortality (p-value = 0.50).<br> <b>Conclusion</b>: The lower mortality rate in patients with severe asthma may be attributed to corticosteroid use, which is less common in patients with mild asthma. Inhaled corticosteroids may offer protection against severe COVID-19 in asthma patients and could potentially help treat COVID-19.</span></span><br> &nbsp;</div> Prevalence, Asthma, COVID-19 1 4 http://jhd.goums.ac.ir/browse.php?a_code=A-10-41-1&slc_lang=en&sid=1 Mohsen Ebrahimi M1355ebrahimi@gmail.com 1003194753284600509 1003194753284600509 No Children's Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran Mousa Ghelichi-Ghojogh m.ghelichi97@gmail.com 1003194753284600510 1003194753284600510 No Children's Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran;Department of Biostatistics and Epidemiology, School of Health, Golestan University of Medical Sciences, Gorgan, Iran Maryam Nafisi mnafisi1992@gmail.com 1003194753284600511 1003194753284600511 No Children's Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran Seyed Ali Aghapour s.a.aghapour@googlemail.com 1003194753284600512 1003194753284600512 Yes Children's Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran