All 138 cats in the study were FIV
tested on the day they entered the shelter, except for one cat that was determined
to be FIV-positive 17 months before shelter entry and four FIV-negative cats that tested
FIV-negative at 4 months (n = 2), 11 months (n = 1) and 18 months (n = 1) before shelter
entry. These cats were still FIV-negative at 14 months (n = 2) and 2 months (n = 2)
after shelter entry, respectively