Table 2.

Residual titres of SARS-CoV-2 surrogate Alphacoronavirus 1 dried on a plastic carrier and kept in a refrigerator at 4 °C, values in the table correspond to mean ± SD of lg TCID₅₀

	Dried virus/no treatment	Dried virus/wet wipes**	Dried virus/hygiene wipes**	Dried virus/disinfectant wipes**
Virus recovery before storage*	7.2 ± 0.4a	4.8 ± 0.7b	4.8 ± 0.5b	3.4 ± 0.5c
24 h at 4 °C	6.0 ± 0.4	4.1 ± 0.9	4.2 ± 0.8	≤ 2.7
48 h at 4 °C	5.6 ± 0.2	3.0 ± 0.3	3.4 ± 0.6	≤ 2.5
72 h at 4 °C	4.8 ± 0.2	≤ 2.6	≤ 3.0	≤ 2.5
96 h at 4 °C	3.5 ± 0.4	≤ 2.5	≤ 2.5	ND
120 h at 4 °C	≤ 2.8	≤ 2.5	≤ 2.5	ND

ND not performed

*Virus elution and titration was arranged immediately after visible drying of the virus drop on the carrier and 5 min after wiping (if applicable)

**Active substances are listed in Table 1

^abcValues with different letters indicate significant differences between treatments at P < 0.05 (one-way ANOVA and post-hoc Tukey’s test)