Biochemical Zombies: Crazy Hospital

Crazy doctors, bloodthirsty patients, terrible illnesses suddenly break out. The infected and survivors are sealed in the hospital. The lack of supplies, the loss of humanity, and the zombie-like bloodthirsty infected are all obstacles to the survivors' survival. Behind the terrible virus is a biochemical gas leak. Is everything an accident? Or man-made? How can survivors save themselves? [Biochemical zombies + hospital survival + suspense + no system + no powers + no rebirth + no brainless cool text.