Covid-19 infection can cause coagulopathy due to cytokine release and immunopathological reactions.In some hospitalized patient it can cause pulmonary embolism or DVT,but in non hospitalized patients can cause small deep vein thrombosis.So it is important for clinicians to investigate the risk of thrombosis in Covid-19 patients especially those with risk factors or previous deep venous thrombosis.It is necessary to do further researchs and realize if it is necessary to add prophylactic anticoagulant to treatment regimen of Covid-19 patients who are not hospitalized or not.

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conflicts of Interests:  The Authors declare that there are no competing interests.