Table 2.

Results of detection and isolation of airborne Newcastle disease viruses.

House	P1 + P2a		P1 + P3b		Double positivec
	Air samples	Swabs	Air samples	Swabs	Air samples	Swabs
A	0/15	0/15	2/15	4/15	0/15	0/15
B	5/15	0/15	7/15	5/15	3/15	0/15
C	2/15	0/10	6/15	5/10	1/15	0/10
D	0/15	0/10	0/15	0/10	0/15	0/10
E	0/15	0/10	7/15	1/10	0/15	0/10
Total	7/75	0/60	22/75	15/60	4/75	0/60

^aNDV positive samples out of 15 samples of detected by the mixed primers of P₁ + P₂.

^bNDV positive samples out of 15 samples of detected by the mixed primers of P₁ + P₃.

^cNDV positive samples out of 15 samples of detected by the mixed primers of P₁ + P₂ and P₁ + P₃ simultaneously (double positive).