Patient taken care of in the SMO pole or the NHC surgical resuscitation service or hospitalized or consultant to the HUS between 01/03/2020 and 31/05/2020
Patient infected with Covid-19, with a documented infection, having presented a documented thrombosis (arterial or venous), with an LA or aPL in the thrombosis assessment
or Patient infected with Covid-19, with a documented infection, without documented thrombosis (arterial or venous), with in the standard work-up an increase in TCA revealing the presence of LA
Subject having given his agreement for the reuse of his data for the purposes of this research
You may not be if
Subject having expressed opposition to participating in the study
