Antihypertensive drugs and risk of COVID-19? Authors' replyWe thank Joshua Brown, Kevin Lo and colleagues, and Christopher Tignanelli and colleagues for their responses to our Correspondence 1 , and we welcome the opportunity to reply.The fast-developing pandemic of corona virus disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was first reported from Wuhan, China, 2 and has spread globally. As of March 22, 2020, 307 297 people have been infected by SARS-CoV-2, with 13 049 deaths and 92 382 people recovered. Several reports have summarised the clinical and epidemiological features of COVID-19 and have shown specific comorbidities associated with increased risk of infection and developing into a severe or fatal case. Of 1099 infected patients, 173 had severe disease, in whom the most common comorbidities were hypertension (24%), diabetes (16%), coronary heart disease (6%), and cerebrovascular disease (2%). 3 In a second cohort of 41 patients hospitalised with COVID-19, 4 diabetes (20%), hypertension (15%), and cardiovascular disease (15%) were frequent comorbidities. Among 191 patients hospitalised with COVID-19, 5 the most common comorbidities with significant effects on mortality were hypertension (30%; p=0•0008), diabetes (36%; p=0•0051), and coronary heart disease (15%; p=0•0001). In an analysis of 201 patients with COVID-19, 6 84 (42%) patients developed acute respiratory distress syndrome, with hypertension (27%) and diabetes (19%) as the most common comorbidities.Hypertension, diabetes, and cardiovascular disease, which seem to be the most common comorbidities in patients with COVID-19, are typically treated with drugs that inhibit the renin-angiotensin system (RAS), including angiotensin-converting