From: Effect of vaccination route (intradermal vs. intramuscular) against porcine reproductive and respiratory syndrome using a modified live vaccine on systemic and mucosal immune response and virus transmission in pigs
Transmission rate
Latency (days)
median
95% CI*
95% CI
V-
0.250
[0.11; 0.50]
1.4
[0.9; 2.7]
V+ ID
0.008
[4E-4; 0.04]
2.5
[1.3; 5.6]
V+ IM
0.009
[5E-4; 0.04]
2.4