paranoid parasititis below canal on 03/19/2007

the first bite appeared after i visited with a neighbor in my building. (coincidence?) within a week i had 5-7 big itchy bites. i stripped the bed on 3/2/07 and found 1 bug. i emailed the rest of the tenants (only 3 occupied floors currently) and was surprised to find out that the 3rd floor tennant had discovered bedbugs 3 weeks earlier and had called in an exterminator.
i've had good luck with washing/vacuuming/isolating so far and an extermninator has sprayed 3 out of 4 floors in the building