Hematological disorders due to covid 19 infection are increasingly known hyperleukocytosis, lymphopenia and thrombocytopenia. However, the association between covid 19 and non-existent, non-apparent or asymptomatic acute leukemia remains rare. No causal relationship has been established between covid 19 and acute leukemia. We report a case of a young patient admitted for treatment of severe covid 19 viral pneumonitis and in whom an acute leukemia was diagnosed.