Inoculum 1 (N=15) Inoculum 1 (N=15) Inoculum 2 (N=33) Inoculum 2 (N=33)
No No. Positivea (%) No No. Positiveb (%) P
RT-PCR results
Day 1-3 15 9(60.0) 33 23(69.7) 0.60c
Day 4-6 15 7(46.6) 32 0(0) <0.001d
Day 15 15 0(0) 32 1(3.1) -
Day 30 13 0(0) 31 1(3.2) -
Day 45 2 0(0) 28 1(3.6) -
Serum IgG conversione
Day 1-3 15 0(0) 33 0(0) -
Day 4-6 14 8(57.1) 32 0(0) <0.001c
Day 15 15 8(53.3) 32 13(40.6) 0.41c
Day 30 14 7(50.0) 31 15(48.4) 0.92c
Day 45 1 1(100) 29 13(48.3) 0.96d