claim: covid-19 induces a hyperactive phenotype in circulating cellslets
evidence_1: circulating levels of pf4, sp-selectin levels and tpo are significantly elevated in covid-19.", "moreover, we have determined that covid-19 patients possess hyperactive circulating platelets.", "strikingly, agonist-induced adp release was dramatically higher in covid-19 patients compared with non-covid-19 hospitalized patients and circulating levels of pf4, sp-selectin and tpo were also significantly elevated in covid-19.")