2 Methods
Studies published from November 2021 to February 2022 were identified from PubMed® and Google Scholar databases using the search terms ‘lockdown’, ‘COVID-19’, ‘asthma morbidity’, ‘asthma control’, ‘asthma exacerbations, ‘behavioural changes’, ‘treatment compliance’, ’pollution’ and ‘respiratory viral infections’. Studies were selected if the target population was asthmatic children and the outcomes were changes in morbidity and control, or changes in any behaviour affecting their exposure to asthma triggers, during the COVID-19 lockdown periods. Studies observing alterations in pollution and implementation of restrictive measures were also included.