Table 1.

Threshold of detection of the assay for different viruses

Virus	Sensitivity threshold (pfu)
WNV (NY)	5
SLE	0.15
DEN 1	0.3
DEN 2	0.3
DEN 3	0.06
DEN 4	2.6
YFV	>0.01

For each virus, RNA was extracted from titrated stocks and serially diluted. For the last dilution still positive, we indicate in the table the equivalent amount of pfu.