TABLE 1.

Summary of patient baseline data and results of laboratory assays

Case designationa	Genderb	Age (mo)	Rash (days after onset)	IgMc (plasma)	RT-PCRd (throat)	MV isolation (PBMC)	No. of infected cells (per 106 PBMC)e
SM4	F	16	1	+	NDf	−	<3
SM5	M	12	1	+	+	ND	ND
SM8	F	42	3	+	+	ND	ND
SM11	M	8	2	+	ND	+	6
SM14	F	24	2	+	ND	−	<3
SM16	M	18	2	+	ND	−	<3
SM23	F	48	5	+	+	+	6
SM24	F	14	5	+	+	+	10
SM25	F	48	3	+	+	+	925
SM26	F	20	3	+	+	+	50
SM27	M	23	3	+	+	+	3
SM28	F	15	2	+	+	+	350
SM29	M	168	4	+	ND	+	150
SM30	M	48	3	+	+	ND	ND
SM31	F	120	4	+	+	+	3
SM32	M	14	2	+/−	+	+	9,700
SM33	F	96	2	+	+	ND	ND
SM34	M	132	4	+	+	+	80
SM37	M	7	4	+	+	+	925
SM38	M	11	4	+	ND	−	<3
SM39	M	10	6	+	+	−	<3
SM40	F	24	2	+	+	+	200
SM41	M	36	2	+	+	ND	ND
SM42	F	12	4	+	+	+	525
SM43	F	5	3	+	+	−	<3
SM44	F	8	3	+	ND	+	100
SM45	F	10	3	+	ND	+	300
SM46	F	23	3	+	+	+	3
SM1	F	48	3	−	−	ND	ND
SM2	F	48	2	−	−	ND	ND
SM3	M	54	3	−	−	ND	ND
SM9	M	15	1	−	−	−	<3
SM17	M	42	3	+/−	−	−	<3
SM18	M	18	4	−	−	−	<3
SM19	M	36	2	−	−	−	<3
SM20	M	11	3	−	−	−	<3
SM21	M	20	4	−	−	−	<3
SM22	M	33	4	−	−	ND	ND

^aLaboratory-confirmed MV cases (see results section) are listed in the upper part of the table, and serologically confirmed MV-negative cases are listed in the lower part. 

^bF, female; M, male. 

^cAs shown in Fig. 1. 

^dPositive if fragment of correct length which hybridized with the specific probe was amplified. 

^eDetermined by infectious center test as described in Materials and Methods. 

^fND, not done.