▎ 摘　　要

NOVELTY - Pharmaceutical composition, composition for anti-coronavirus disinfection, food composition and feed composition comprise nano-sized graphene oxide or its complex. USE - The pharmaceutical composition, food composition and feed composition are useful for preventing or treating coronavirus infection or infectious disease. The coronavirus is at least one chosen from alpha -coronavirus, beta -coronavirus, gamma -coronavirus and delta -coronavirus. The coronavirus is PEDV, canine coronavirus (CCV), feline infectious peritonitis virus (FIPV), BCoV, avian infectious bronchitis virus (IBV), transmissible gastroenteritis coronavirus (TGEV), severe acute respiratory syndrome coronavirus (SARS-CoV), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Middle East respiratory syndrome coronavirus (MERS-CoV) or their combinations. The coronavirus infection disease is coronavirus, coronavirus enteritis, coronavirus diarrhea, coronavirus pneumonia, SARS, MERS, coronavirus disease 2019 (COVID-19), acute respiratory distress syndrome (ARDS), avian infectious bronchitis or their combinations. The composition is also useful as disinfectant for coronavirus (all claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for disinfecting a coronavirus, which involves spraying, cleaning or applying the composition in air, surface of an object or mammals other than humans.