Illnesses

Discovering New Illnesses
When a new Illness is discovered, a letter will be sent, listing the room required to cure it. There are two buttons at the bottom of this letter. If the required treatment room is already built, the Hospital will still inform you a new Illness was discovered, but the patient will be sent to treatment immediately.
 * Send Patient Home - If you cannot build the required room in a reasonable fashion, you can take a small reputation hit and send them home now.
 * Get Patient to Wait - If you can build the required room, you can have the patient wait. If you do not build the room, however, the patient will either die from low Health or Rage Quit.

Curing
Curing patients will enable you to not only make money, but will improve your hospitals reputation which in turn attracts more patients.

When a doctor or nurse treats a patient, their ability and any applicable qualifications will influence the chance of success. Some illnesses are tougher than others.

Diagnosing and treating patients will keep money coming in and allow hospital expansion. Treatment will earn you money, even if it is unsuccessful or results in the patient's death.

To increase the chances of successfully curing a patient, reach 100% Diagnosis Certainty, assign your best staff to the treatment room and upgrade treatment machines.

Death & Ghosts
Patients can die if a treatment fails, or if they are waiting too long and their health deteriorates. The hospital reputation will suffer as a result. There's also a chance the patient will return to haunt the hospital! If this happens, you'll need a Janitor with a Ghost Capture qualification.

Each time a Janitor captures a ghost they gain research in the illness which killed that particular peep. Meaning the more ghosts you bust, the more research into curing a variety of illnesses you will gain. Although, it isn't recommended as your primary method of learning.

Ectoplasm

Research allows the collection of extoplasm to be put in a jar and be reunited with their family.

Catching ghosts will enable you to increase research on illnesses.