INT 21 - VIRUS - "Nina" - INSTALLATION CHECK
	AX = 9753h
Return: never (executes original program) if virusA program which attaches itself to other programs for the purpose of duplicating itself.	Viruses often (but not always) contain harmful code which is triggered by some event, after a certain number of reproductions, or on a specific date.  See also worm. resident
SeeAlso: AH=90h"VIRUS",AX=A1D5h"VIRUS",AX=9AD5h"VIRUS"