As CLEC2 is expressed in platelets abundantly, and lung is the major extra‐bone marrow organ for platelet biogenesis and reservoir of megakaryocytes (Lefrancais et al, 2017; Lefrancais & Looney, 2019), SARS‐CoV‐2 is likely to induce severe immunothrombosis and cause acute respiratory syndrome in COVID‐19 patients via activating platelets in lung. Here, CLEC1B is linked to COVID-19.