Table 2.

Decay rates of the NoV genome under different temperatures and water matrices. T90 and T99.99 values (days) for log-linear decay, and TFL and T4L (time required to achieve 1 and 4 log₁₀ reduction, respectively) values (days) for non-linear decay are presented. DW = drinking water. WW = wastewater.

				Log-Linear		Non-Linear
T	Water	Virus	Best Fitting Model	T90	T99.99	TFL	T4L
3 °C	DW	GII_A	N/A 1	Na2	Na	Na	Na
		GII_B	N/A	Na	Na	Na	Na
	WW	GII_A	Double Weibull	38	154	57	185
		GII_B	Double Weibull	45	179	50	569
		GII_ind	Log-linear shoulder	115	461	Na	Na
21 °C	DW	GII_A	Weibull	230	921	298	505
		GII_B	Double Weibull	115	461	132	431
	WW	GII_A	Log-linear shoulder	58	230	14	Na
		GII_B	Log-linear shoulder	38	154	8	21
		GII_ind	Log-linear shoulder	115	461	19	Na
36 °C	DW	GII_A	Log-linear	58	230	N/A	N/A
		GII_B	Log-linear	33	132	N/A	N/A
	WW	GII_A	Log-linear	11	44	N/A	N/A
		GII_B	Log-linear	13	51	N/A	N/A
		GII_ind	Log-linear	46	184	N/A	N/A

¹ N/A, not applicable; ² Na, not achieved.