Patient(41) SARS-CoV-2(23) COVID-19 vaccine(17) COVID-19(17) Infection(15) Pathogenesis(12) patients(12) Italian(11) COVID-19 pandemic(11) adverse event(11) Adverse reaction(11) Cohort(10) Evidence(10) Vaccine(10) positive(10) reported(9) subject(8) eruption(8) initial(8) virus(8) significantly higher(8) humans(8) retrieved(8) Adverse drug reaction(8) nucleocapsid protein(8) risk ratio(8) 95% CI(8) clinic(8) T-cell-mediated immunity(8) risk(8)