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Table 2 Number of infected and contact uninfected naïve birds showing the presence of virus in buccal and cloacal swabs collected over 29 days

From: Infectivity and transmissibility of H9N2 avian influenza virus in chickens and wild terrestrial birds

Species Infection route Number of birds Passage number Swab samples Days post infection
2 3 4 5 6 7 9 11 15 19 23 27 29
Broilers Infected 10 1st B 5 10 10 10 10 10 10 9 2 - - - -
C - 10 10 10 4 4 - - - - - - -
Contact 5 1 st B 2 3 3 4 4 4 4 4 - - - - -
C - 5 5 5 1 - - - - - - - -
Layers Infected 10 1st B 7 10 10 10 10 10 10 10 - - - - -
C - 10 10 10 - - - - -
Contact 5 1 st B 1 4 3 4 4 4 4 2 - - - - -
C - 5 5 4 2 - - - - - - - -
Jungle fowl Infected 10 1st B 7 10 10 10 10 10 10 10 1 -
-
-
-
-
-
-
--
C - 10 10 10 6 3 - - -
Contact 5 1 st B 3 2 2 2 2 2 1 1 - -
-
-
-
-
-
-
-
C - 5 5 5 4 - - - -
Quail Infected 10* 1st B 10 10 8 8 8 8 6 - - -
-
-
-
-
-
-
-
C - 10 8 8 7 1 - - -
Contact 5 1 st B 4 5 5 4 4 2 - - -
-
-
-
-
-
-
-
-
-
C - 5 5 5 5 2 - -
Sparrows Infected 10 1st B 10 10 10 10 10 10 3 - - - - - -
C - 10 10 10 6 - - - - - - - -
Contact 5 1 st B 5 5 4 4 4 3 - - - - - - -
C - 5 5 5 4 - - - - - - - -
Crows* Infected 10 1st B - - - - - - - - - - - - -
C - - - - - - - - - - - - -
2nd B 1 9 9 10 10 8 - - - - - - -
C - 10 10 10 6 1 - - - - - - -
Contact 5 1 st B - - - - - - - - - - - - -
C - - - - - - - - - - - - -
2 nd B - - - - - - - - - - - - -
C - - - - - - - - - - - - -
  1. *swabs from crows only showed virus presence after two serial passages in eggs. B, denotes buccal swabs. C, denotes cloacal swabs and -, indicates that swabs were negative for virus. Infected birds were inoculated with 106.6 EID50 UDL-01/08 virus. Swab samples were inoculated into EHE and virus in the harvested allantoic fluid was detected by HA assay. * two quail on 4 dpi died and from this time point onward swabs from 8 birds were analysed. Contact birds are indicated in bold.