Unusual viral infection Sepsis Viral sepsis Sepsis or sepsis-like syndrome caused by viral infection, characterized by a dysregulated host response to a viral pathogen with systemic inflammation, multi-organ involvement, and potential progression to circulatory and respiratory failure. Causative organisms include, among others, influenza virus, SARS-CoV-2, dengue virus, enteroviruses, and various herpesviruses such as cytomegalovirus (CMV), Epstein-Barr virus (EBV), and varicella-zoster virus (VZV). Viral bloodstream infection