Week Criteria Canarypox-FeLV #/24 LEUCOGEN N #/24 Control #/23 1 Neg 24 24 23 p27 0 0 0 VI 0 0 0 4 Neg 24 24 20 p27 0 0 2 VI 0 0 3 6 Neg 23 23 19 p27 0 1 3 VI 1 1 4 8 Neg 23 23 18 p27 1 1 5 VI 1 1 5 10 Neg 22 23 17 p27 2 1 6 VI 1 1 6 12 Neg 21 23 12 p27 2 1 7 VI 3 1 11 14 Neg 21 23 9 p27 3 1 13 VI 3 1 13 18 Neg 20 18 5 p27 4 6 17 VI 4 6 18 21 Neg 20 17 5 p27 4 6 17 VI 4 6 18 25 Neg 20 17 1 p27 4 6 20 VI 4 7 21 27 Neg 17 17 1 p27 4 7 21 VI 5 7 22

neg: neither antigenae nor viraemic p27: antigenemic; VI: viremic; #: number of cats

Table 1: Antigenaemia and viraemia status of the cats after mixing with Group A on week 0.