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Table 5 Experiment 1 CONTACT. Proportion of birds becoming infected with ILTV following exposure to A20, Serva and Class 9 ILTV by eye drop inoculation, contact with inoculated birds or sharing an airspace with inoculated in the 21 days post exposure

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

ILTV strains

Proportion of chickens infected with ILTV (%)*

Eye drop

In-contact

Shared airspace

Total

 A20

7/7 (100)a

7/7 (100)a

4/15 (27)bA

18/29 (62)A

 Serva

8/8 (100)

8/8 (100)

16/16 (100)B

32/32 (100)B

 Class 9

8/8 (100)

8/8 (100)

15/15 (100)B

31/31 (100)B

 Total

23/23 (100)

23/23 (100)

35/46 (76)

81/92 (88)

Factor

P value

 ILTV strain

 < 0.0001

 Mode of exposure

0.0019

  1. Proportion of birds becoming infected with ILTV following exposure to A20, Serva and Class 9 ILTV by eye drop inoculation, contact with inoculated birds or sharing an airspace with inoculated in the 21 dpe.
  2. *As defined in “Materials and methods” section.
  3. abDifferent lowercase superscripts indicate significant differences within rows.
  4. ABUppercase superscripts indicate a significant differences within columns for each ILTV strain. (P < 0.05).