TABLE 2.

Serologic testing for T. gondii in subsequent samples^a

Day of illnessb	IgG level (IU/ml)	IgM detection	Avidityd
0	Neg	Neg	NDc
9	7	Pos	ND
16	28	Pos	0.112
41	68	Neg	0.033
56	81	Neg	ND
71	96	ND	0.008
106	95	ND	0.015
127	80	ND	0.013
148	85	ND	0.005
255	54	ND	0.022
290	51	ND	0.033
329	47	ND	0.067

^aAt day 1, the patient was admitted with pneumonia; at day 53, she was readmitted with neurological symptoms and chorioretinitis. Neg, negative; Pos, positive.

^bDay of onset of illness was day 133 posttransplantation.

^cND, not done.

^dValues of <0.200 are low avidity.