• Recommendations for recipients in the post-transplant phase Patients, after being discharged from the transplant unit should limit their contacts with potentially infected people and should adhere to national prevention guidelines recommendations such as hand hygiene, home isolation and social distancing. Patients may use cyber network or telephone contact with healthcare providers to manage their non-emergent problems in order to reduce the frequency of travels to the hospital. Prophylaxis after HSCT with hydroxychloroquine sulfate 400 mg as a single dose (Pediatric dose: 6.5 mg/kg, not to exceed 400 mg) every three weeks since engraftment until the COVID-19 pandemic has lapsed, is recommended.