{Reference Type}: Case Reports {Title}: A Case of Fulminant Fusobacterium necrophorum Bacteremia Secondary to Non-severe COVID-19. {Author}: Taniguchi H;Terayama T;Kiriu N;Matsukuma S;Kiyozumi T; {Journal}: Cureus {Volume}: 15 {Issue}: 3 {Year}: Mar 2023 暂无{DOI}: 10.7759/cureus.35717 {Abstract}: The Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is more infectious than the previous variants but less severe; more patients are being followed up without hospitalization. Identification of patients with severe disease symptoms as early as possible and prompt initiation of treatment are crucial. A case of a 19-year-old man with mild COVID-19 is described in this report. He died of a secondary infection with Fusobacterium necrophorum bacteremia and a progressive hemorrhagic disorder. The diagnosis was made based on the clinical course and needle necropsy results. In non-severe COVID-19 patients, rapid deterioration of the disease symptoms requiring emergency treatment should lead to suspicion of additional fatal infections with similar clinical symptoms.