Table 1. RT-PCR positive results for nasopharyngeal and saliva samples for different definitions of positivity.

Positive definition	Nasopharyngeal positive	Nasopharyngeal negative
Any gene with Ct< = 40, any delay, any presentation
Saliva positive	94	15
Saliva negative	114	805
Any gene with Ct< = 40 & Symptoms <10 days
Saliva positive	64	6
Saliva negative	24	187
At least 2 target genes Ct < = 40 & Symptoms <10 days
Saliva positive	57	6
Saliva negative	16	187
2 genes (RdRp & N gene) with Ct <35, any delay, any presentation
Saliva positive	83	1
Saliva negative	0	944