Multicentric Registry of Patients With Acute Leukemia Infected by COVID-19

Inclusion Criteria: * Diagnosis of acute leukemia according to WHO criteria 2016 ≤ 5 years * Diagnosis of a proven or probable SARS-CoV-2 infection according to the following criteria: 1. Proven infection: positive Polymerase Chain Reaction (PCR) regardless of the radio-clinical picture (other tests made available later and having good diagnostic performance will be accepted) 2. Probable infection: negative PCR but association of 1. Evocative clinical signs, of recent installation: fever, respiratory signs (cough, dyspnea, chest pain), body aches, sore throat, rhinorrhea, headache, diarrhea / abdominal pain, frank asthenia, loss of taste / smell, conjunctivitis, type of frostbite AND 2. evocative radiological signs, on CT: diffuse or diffuse aspect of frosted glass, condensations including pseudo-nodular condensations, association of frosted glass and condensation within the same lesion, nodules and micronodules, thickening of the interlobular septa) or on chest radiography: interstitial, alveolo-interstitial or alveolar syndrome, single or bilateral AND 3. absence of differential diagnosis Exclusion Criteria: * None