A new virus infection emerges in the city during winter, causing many residents to come down with a cold. A sick individual will often sneeze in a crowded room, which helps to spread infection to nearby workers. The sudden transmission creates a small local epidemic within days. Patients feel a sharp itch in their nose and a sore throat when they wake up. Some people even report a strange pain near a back tooth or a dry tongue. [I] When residents contract a disease, they feel physically weak and run out of energy quickly during basic tasks. At night, they experience severe insomnia and stay awake for hours. The lack of deep rest makes some patients break down emotionally in the waiting room. [II] Physical pain and mental panic raise their overall anxiety level. The body initiates a high fever to protect against the foreign germ, sending heat signals through every nerve to alert the brain. Sick residents visit the hospital to get medical treatment. Doctors instruct them to stay in bed to recharge their batteries. The staff gives them a specific chemical drug to attack the virus. Patients who respond to the medicine begin to recover their strength. [III] The city relies on a large health system to manage the crowd, while technicians use a secure laboratory to study the specific gene of the virus. Some patients receive light massage therapy to relax tight back muscles. The regional health policy outlines strict rules to manage the active viral spread. Hospital administrators track the daily admission numbers to determine if the germ will increase mortality rate figures among older adults. Clerks process hundreds of standard medical insurance files to cover the cost of intensive care. The laboratory data points out that local clinics are processing testing samples every single hour. Health boards update the official disease registry based on the current active case count across the urban districts. [IV]