TABLE 1.

Antibody titers corresponding to EBV status (by IF)^a

EBV serostatus	Titer of antibody
	VCA IgG	VCA IgM	EA IgG	EBNA IgG
Seronegative	<5	<10	<5	<5
Past infection	20–640	<10	≤10	20–320
Primary infection	20–1,280	>10	<5–160	<5–10
Reactivation	1,280–5,120	<10	<5–≥80	20–320

^aTiters correspond to the last dilution showing any fluorescence.