Table 2. Probabilities with screening option.

	date of maternal primary infection
Probabilities	12 Weeks	16 Weeks	20 Weeks	24 Weeks	28 Weeks	32 Weeks	36 Weeks*	Newborn *	Postnatal *	References
Maternal IgG (+) (Seroprevalence)	0.313									[18]
IgG(+) IgM(+) Primary Maternal Infection	0.0016									[18]
Confirmation test (+)	0.9									[1]
Fetal death due to CT	0.02	0.0025	0	0	0	0	0	0	0	[30]
Fetal loss from amniocentesis	0.003 (0.0011–0.0049)	0.003	0.003	0.003	0	0				[31]
Amniocentesis (-)	0.90	0.873	0.785	0.638	0.514	0.450				[8, 24, 32]
False negative of amniocentesis (CT if amniocentesis (-))	0.05	0.05	0.05	0.05	0.10	0.15				[8, 24, 32]
Asymptomatic CT if amniocentesis (-)	0.70	0.70	0.75	0.775	0.79	0.79	0.795	0.795	0.795	[8, 24, 32]
Visual injury if CT with amniocentesis (-)	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20	[2, 12, 14, 33, 34]
Visual and cognitive injury if CT with amniocentesis (-)	0.10	0.10	0.05	0.025	0.01	0.01	0.005	0.005	0.005	[2, 12, 14, 33, 34]
Asymptomatic CT if amniocentesis (+)	0.50	0.5	0.70	0.75	0.795	0.795				[2, 12, 14, 33, 34]
Visual injury if CT with amniocentesis (+)	0.30	0.30	0.25	0.20	0.20	0.20				[2, 12, 14, 33, 34]
Visual and cognitive injury if CT with amniocentesis (+)	0.20	0.20	0.05	0.05	0.005	0.005				[2, 12, 14, 33, 34]

*Probability without amniocentesis and with confirmatory testing