Table 5.

Efficacy of food additive grade calcium hydroxide powder at consecutive time points for inactivating Newcastle disease virus and avian influenza virus under sunlight, during a 3-min incubation period.

Month	Newcastle disease virus			Avian influenza virus
	Treated	Control	RFa	Treated	Control	RF
1	<2.50	8.75	>6.25*	<2.50	6.25	>3.75*
2	<2.50	8.75	>6.25*	<2.50	6.25	>3.75*
3	<2.50	8.75	>6.25*	<2.50	6.25	>3.75*
4	<2.50	7.50	>5.00*	<2.50	6.25	>3.75*
5	7.25	7.50	0.25	<2.50	6.25	>3.75*
6	6.25	7.50	1.25	<2.50	6.25	>3.75*

^aRF=Reduction factor,

^*Inactivation regarded as effective when RF was ≥3