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Table 6 Virus titers in cloacal and oropharyngeal swabs from ducks

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 1.96 ± 0.60(4/6) 1.89 ± 0.76(2/6) NDd (0/3) ND (0/3) ND (0/3) ND (0/3) ND (0/3) ND (0/3) ND (0/3) ND (0/3)
Contact c 1.75 ± 0.43(1//3) ND (0/3) 2.25 ± 1.30(1/3) 2.00 ± 0.43(2/3) ND (0/3) 1.83 ± 0.57(1/3) ND (0/3) ND (0/3) ND (0/3) ND (0/3)
NH-10 Infected 2.17 ± 1.04 (2/6) 2.17 ± 1.04 (2/6) ND (0/3) 1.58 ± 0.14(1/3) ND (0/3) 1.58 ± 0.14(1/3) ND(0/3) ND(0/3) ND(0/3) ND(0/3)
Contact 1.58 ± 0.14(1/3) ND (0/3) ND (0/3) ND (0/3) ND(0/3) ND(0/3) ND(0/3) ND(0/3) ND(0/3) ND(0/3)
  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. bDucks inoculated with virus.
  3. cNaive contact ducks housed with those inoculated.
  4. dNo detected.