Table 3.
Venezuelan equine encephalitis virus (IAB and TC83), time to nondetect, recovery and Di
| Test organism | Target environmental conditions | Material | Time (h) | Control recovery (log10 PFU)* | Test recovery (log10 PFU)* | Control Di (h) | Test Di (h) |
|---|---|---|---|---|---|---|---|
| VEEV IAB | 58·3 ± 10·7°C | Glass | 12 | 6·6 | 0·0 | 39·3 | 1·6 |
| 29·2 ± 10·5% RH | Paper | 12 | 5·8 | 0·0 | 23·9 | 1·7 | |
| VEEV TC83 | Glass | 12 | 6·1 | 0·0 | 31·2 | 1·6 | |
| Paper | 6 | 1·6 | 0·0 | 29·3 | 3·1 | ||
| VEEV IAB | 37·7 ± 0·6°C | Glass | 24 | 6·9 | 0·0 | 35·2 | 3·1 |
| 75·7 ± 2·5% RH | Paper | 24 | 6·2 | 0·0 | 28·6 | 3·2 | |
| VEEV TC83 | Glass | 24 | 6·3 | 0·0 | 39·2 | 3·2 | |
| Paper | 24 | 0·9 | 0·0 | 23·8 | 5·5 | ||
| VEEV IAB | 38·1 ± 2·1°C | Glass | 96 | 4·8 | 0·0 | 31·5 | 12·2 |
| 41·4 ± 5·6% RH | Paper | 96† | 4·4 | 1·3 | 29·5 | 15·1 | |
| VEEV TC83 | Glass | 96† | 5·3 | 1·2 | 41·0 | 14·9 | |
| Paper | 12 | 2·8 | 0·0 | 22·1 | 2·8 | ||
| VEEV IAB | 21·8 T 0·3°C | Glass | 96† | 5·9 | 3·2 | 53·3 | 21·5 |
| 74·7 T 3·6% RH | Paper | 96 | 6·2 | 0·0 | 64·4 | 12·6 | |
| VEEV TC83 | Glass | 96† | 4·9 | 3·3 | 43·1 | 24·9 | |
| Paper | 24 | 2·15 | 0·0 | 37·5 | 6·5 |
*
Total log10 value remaining at longest timepoint or at first instance of nondetect, theoretical limit of detection 33 PFU.
†
Incomplete inactivation at longest timepoint tested.