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Table 3 Experiment 1 CONTACT. Summary of analyses of clinical scores and ILTV GC in choanal cleft swabs (LSM ±S.E) showing treatment effects and their significance

From: Transmission of infectious laryngotracheitis virus vaccine and field strains: the role of degree of contact and transmission by whole blood, plasma and poultry dust

Factors and levels Clinical signs qPCR result of choanal cleft swabs
N.positive/total (%) Clinical score N.positive/total (%) Log10 GC/reaction
Overall 45/92 (49) 0.23 ± 0.04 81/92 (88) 4.23 ± 0.09
Factor and level
 Mode of exposure P = 0.0013 P < 0.0001 P < 0.0019 P < 0.0001
  Eye drop 14/23 (61)a 0.35 ± 0.05a 23/23 (100)a 5.02 ± 0.16a
  In-contact 17/23 (74)a 0.39 ± 0.05a 23/23 (100)a 4.78 ± 0.16a
  Shared airspace 14/46 (30)b 0.09 ± 0.04b 35/46 (76)b 2.89 ± 0.12b
 ILTV Strains P < 0.0001 P < 0.0001 P < 0.0001 P = 0.09
  A20 2/29 (7)c 0.02 ± 0.05c 18/29 (62)b 3.95 ± 0.16a
  Serva 18/32 (56)b 0.27 ± 0.05b 32/32 (100)a 4.39 ± 0.15a
  Class 9 25/31 (81)a 0.55 ± 0.05a 31/31 (100)a 4.35 ± 0.15a
 dpe P = 0.12 P < 0.0001   P < 0.0001
  3   2.86 ± 0.16b
  5 6/95 (6) 0.1 ± 0.05c  
  6 13/95 (14) 0.21 ± 0.05bc   4.65 ± 0.16a
  7 13/95 (14) 0.21 ± 0.05bc  
  8 20/95 (21) 0.33 ± 0.05ab  
  9 21/95 (22) 0.44 ± 0.05a  
  10 16/95 (17) 0.28 ± 0.05abc   4.69 ± 0.16a
  11 21/95 (22) 0.39 ± 0.05ab  
  13 15/95 (16) 0.29 ± 0.05ab  
  14 17/95 (18) 0.26 ± 0.05abc   4.35 ± 0.16a
  15 21/95 (22) 0.32 ± 0.05ab  
  16 18/95 (19) 0.28 ± 0.05abc  
  17 16/95 (17) 0.26 ± 0.05abc   4.31 ± 0.16a
  18 21/95 (22) 0.26 ± 0.05abc  
  21 23/95 (24) 0.29 ± 0.05ab   4.51 ± 0.16a
 Interaction (P-value)
  ILTV strain*Dpe   P < 0.0001   P < 0.0001
  ILTV strains*ME   P < 0.0155   P < 0.0001
  Mode of exposure*Dpe   P < 0.0001   P < 0.0001
  ILTV strains*ME*Dpe   P < 0.0001   P < 0.0001
  1. Summary of analyses of clinical scores and ILTV GC in choanal cleft swabs (LSM ± S.E) showing treatment effects and their significance.
  2. *dpe: days post-exposure, GC: genome copy, ME: mode of exposure.
  3. abcDifferent letters within columns for each factor indicate significant differences between levels (P < 0.05). Bold text indicates statistically significant values (P < 0.05).