Original ResearchPublished 18 August 2026Adverse drug events in hospitalized COVID-19 patients: a pharmacovigilance perspective on ICU management and fentanyl exposureMichele Ferreira Murgel · Marcel de Souza Borges Quintana · Roberta Olmo Pinheiro · Vítor Santos da Silva · Cláudia Luciana dos Santos Moura · Vanessa da Gama Oliveira · Cláudia Maria Valete Rosalino · Gilberto Marcelo Sperandio da SilvaFrontiers in Epidemiologydoi 10.3389/fepid.2026.1770145