Table 3.

Duration of viable virus shedding and PCR positivity of the SARS-CoV-2 Omicron variant in patients with Omicron variant and Delta variant.

Study	Outcome variable	Variant	Sample size	Mean duration (95%CI)
Boucau et al. [10]	Duration of viable virus shedding	Omicron	19	6.00 (5.10-6.90)
		Delta	37	6.00 (5.68-6.32)
	Duration of PCR positivity	Omicron	19	12.00 (10.20-13.80)
		Delta	37	12.67 (11.70-13.63)
Bouton et al. [11]	Duration of viable virus shedding	Omicron	75	3.00 (2.32-3.68)
		Delta	16	3.67 (1.28-6.06)
Hay et al. [37]	Duration of PCR positivity	Omicron	107	9.87 (8.83-10.90)
		Delta	97	10.90 (9.41-12.40)
Kang et al. [16]	Duration of viable virus shedding	Omicron	34	4.00 (2.44-5.56)
		Delta	48	8.17 (6.44-9.90)
	Duration of PCR positivity	Omicron	34	9.00 (8.04-9.96)
		Delta	48	20.33 (18.39-22.28)
Hua et al. [13]	Duration of PCR positivity	Omicron	225	11.00 (10.61-11.39)
		Delta	326	16.50 (15.61-17.39)

PCR, polymerase chain reaction.