Oops...  forgot a few...

Jusenkyo Virus: Is harmless until another virus attempts to infect it. 
The infecting virus is then affected in such a way that it's nature will
change when hit with the Cold Water Virus.  There are many variations of
this virus, each having a different effect.  (For example, changes the
Ryoga Hibiki Virus into the P-chan virus)  *note: All Jusenkyo Virus
names begin with "Spring of Drowned" followed by their property.*

Jusenkyo Guide Antivirus: Attempts to keep other Ranma 1/2 viruses from
infecting the Jusenkyo Virus.  Unfortunately, it isn't very effective.

Cold Water Virus: Changes the nature of viruses affected by the Jusenkyo
Virus.  Extremely common.

Hot Water Virus: Temporarily counters the Jusenkyo Virus...