Skip to main content

Advertisement

Table 4 Virus titers in cloacal and oropharyngeal swabs from chickens

From: Phylogenetic relationships and pathogenicity variation of two Newcastle disease viruses isolated from domestic ducks in Southern China

Strains Days post-inoculation (log10EID50/0.1 mL) ± SDa
3 Day 5 Day 7 Day 9 Day 11 Day
Oropharyngeal swabs Cloacal swabs Oropharyngeal swabs Cloacal swabs Oropharyngeal swabs Cloacal swabs Oropharyngeal swabs Cloacal swabs Oropharyngeal swabs Cloacal swabs
SS-10 Infected b 4.30 ± 0.51 (6/6) 4.5 (6/6) 2.67 ± 0.14 (3/3) 1.75 ± 0.43 (1/3) -d - - - - -
Contact c 2.50 ± 0.25 (3/3) 3.17 ± 0.63 (3/3) 3.42 ± 0.58 (3/3) 2.50 ± 0.75 (3/3) 1.75 (1/1) 1.75 (1/1) NDe (0/1) ND (0/1) ND (0/1) ND (0/1)
NH-10 Infected 3.58 ± 0.20 (6/6) 4.04 ± 0.56 (6/6) 4.5 (1/1) 5.25 (1/1) - - - - - -
Contact 2.42 ± 0.14 (3/3) 2.58 ± 0.14 (3/3) 4.25 ± 0.43 (3/3) 4.67 ± 0.88 (3/3) - - - - - -
  1. aFor statistical purposes, a value of 1.5 was assigned if virus was not detected from the undiluted sample in three embryonated hen’s eggs [17].
  2. bChickens inoculated with virus.
  3. cNaive contact chickens housed with those inoculated.
  4. dAll the chickens died at the end of the observation.
  5. eNo detected.