The current outbreak of the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), causing coronavirus disease 2019 , has become a worldwide pandemic with high morbidity and mortality in individuals with chronic disorders. 1 The pandemic introduced many unanticipated challenges for patients with chronic and rare diseases, such as Gaucher disease (GD). 2 GD is the most common inborn error of metabolism, caused by biallelic glucosylceramidase beta (GBA) variants and affecting the recycling of cellular glycolipids; GD manifests as hepatosplenomegaly, thrombocytopenia, anaemia and bone disease. 3 We performed a cross-sectional study using an online survey regarding attitudes of GD experts towards COVID-19 vaccination for patients with GD, and the impact of the pandemic on their patients. The full methods and results are available in the Supplementary Data.A total of 19 GD experts from 10 countries, collectively treating 1417 patients with GD, responded to the survey, revealing overall support of COVID-19 vaccination for patients with GD. This support is mainly explained by the concern that the pathophysiology of GD may put the patients at higher risk of severe COVID-19, coupled with the absence of contraindications for vaccination in this population, which is consistent with professional guidelines. [4][5][6][7] Specifically, mRNA-based vaccines were favoured by GD experts compared to adenovirus-based vaccines due to their overall efficacy, tolerance and safety profiles, as appears from clinical trials and worldwide experience. 8,9 Concerns regarding the AAV-vectored vaccines may be underestimated amongst our cohort, as the questionnaire was distributed when data on only one such vaccine was available (AZD1222, Oxford-AstraZeneca), and some responses were prior to the regulatory authorisation, thus lacking knowledge on its side-effects.Our present study revealed that of the 82 patients with GD who contracted COVID-19 (5Á8% of the entire cohort), 93Á9% were either asymptomatic or mildly affected, while two had severe/critical infection. It is also possible that these numbers are an underestimation, as asymptomatic or mildly symptomatic patients may have not been tested for COVID-19 or may have not reported on contracting COVID-19 to their GD clinic. To date, four reports have been published on COVID-19 infection in patients with GD, all reporting of asymptomatic/mild infections, and only one of severe disease in a patient with multiple comorbidities. [10][11][12][13] This makes