Transmission occurs via the introduction of an infected individual's bodily fluids into a healthy person's bloodstream. The virus is likely replicated in the infected's saliva and/or blood. Due to the primitive (and highly aggressive) behavior caused by the Harran Virus in infected individuals, the typical method of transmission is through biting.
Before being completely overtaken by the virus, infected will periodically suffer from seizures causing fatigue and blurred vision. In late stages the individual will have a pale complexion and sometimes appear malnourished. The time from infection to transformation seems to vary greatly from hours to days.
The Harran virus, despite how lethal and unpredictable it is during the outbreak, does have one weakness - Antizin. Antizin is a viral suppressant which temporarily stops the Harran Virus' progression and relieves symptoms, it is however not a cure.
When infected, an individual will start having seizures. If Antizin is not administered quickly, the individual will begin to transform into an extremely agressive "Viral" with 30% exhibiting human speech for a short period before returning to their natural state of aggression. After a period of time, they will deteriorate into biters. Biters are mindless animals, attacking, and biting, anyone not already turned.
Biters are infected that have been turned into mindless creatures interested only in feeding off the flesh of those not turned. Biters also seem to have very acute hearing, as any loud noise will draw large hordes.
The virus appears to cause a wide variety of mutations in infected individuals. It is important to note that simply being infected does not prevent attacks from biters - though daring individuals may cover themselves in the guts of deceased infected to temporarily move undetected.