Table 2.

Stability characteristics of foam-dried Ty21a-PA-01

Time point (months)	Viable count (× 106 CFU ± SD/mg foam-dried product) at respective storage temperatures
	4 °C	Ambient	37 °C
0	N/A	57.7 ± 9.6	N/A
1	75.4 ± 4.7	89.4 ± 9.1	7.2 ± 2.4
3	63.1 ± 11.6	38.8 ± 13.1	3.6 ± 0.9
15	56.8 ± 5.6	24.8 ± 5.4	N/A
20	66.9 ± 15.5	27.4 ± 5.2	N/A

The water content (~5 to 6%) was stable throughout the study period. Ambient temperature was 20–25 °C

N/A not available or not tested