Positive selection in the hemagglutinin-neuraminidase gene of Newcastle disease virus and its effect on vaccine efficacy

Table 5 Virus recovery of swab samples from different rFPV immunized groups challenged with NDV Go/JS6/05

Vaccine group	No. of birds shedding/total no. of birds on day after challenge:						Mortality
	3		5		7
	Trachea	Cloaca	Trachea	Cloaca	Trachea	Cloaca
rFPV-JS6HN	11/18^B	4/18^B	0/18^A	1/18^A	0/12^A	0/12^A	0/18^A
rFPV-LaSHN	16/18^AB	7/18^B	1/18^A	9/18^B	0/12^A	2/12^A	0/18^A
Unvaccinated	17/18^A	14/18^A	NS	NS	NS	NS	18/18^B

^{A, B} Different superscript letters denote significant difference between treatment groups within the column; Fisher's exact test, P < 0.05.
NS: No survivors.

ISSN: 1743-422X