RT Journal Article SR Electronic T1 Risk of serious COVID-19 outcomes among adults and children with moderate-to-severe asthma: a systematic review and meta-analysis JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 220066 DO 10.1183/16000617.0066-2022 VO 31 IS 166 A1 Bohee Lee A1 Grace Lewis A1 Eldad Agyei-Manu A1 Nadege Atkins A1 Urmila Bhattacharyya A1 Marshall Dozier A1 Jasmin Rostron A1 Aziz Sheikh A1 Ruth McQuillan A1 Evropi Theodoratou A1 , YR 2022 UL http://err.ersjournals.com/content/31/166/220066.abstract AB Background The Joint Committee on Vaccination and Immunisation in the United Kingdom requested an evidence synthesis to investigate the relationship between asthma and coronavirus disease 2019 (COVID-19) outcomes.Objective We conducted a systematic review and meta-analysis to summarise evidence on the risk of severe COVID-19 outcomes in people with uncontrolled asthma or markers of asthma severity.Methods High-dose inhaled corticosteroids (ICS) or oral corticosteroids (OCS) were used as markers of asthma severity, following international or national asthma guidelines. Risk of bias was assessed using Joanna Briggs Institute tools. Adjusted point estimates were extracted for random-effects meta-analyses and subgroup analyses.Results After screening, 12 studies (11 in adults and one in children) met the eligibility criteria. Adults using high-dose ICS or OCS had a pooled adjusted hazard ratio (aHR) of 1.33 (95% CI 1.06–1.67, I2=0%) for hospitalisation and an aHR of 1.22 (95% CI 0.90–1.65, I2=70%) for mortality for COVID-19. We found insufficient evidence for associations between markers on COVID-19 mortality in the subgroup analyses.Conclusions Adults with severe asthma are at increased risk of COVID-19 hospitalisation compared to nonusers. Our analysis highlighted the dearth of studies in children with asthma investigating serious COVID-19 outcomes.This systematic review demonstrated that adults with severe asthma requiring high-dose inhaled corticosteroids or oral corticosteroids have a higher risk of hospitalisation from COVID-19 than those with mild asthma or no asthma. https://bit.ly/3zYiWaO