Table 2.

Measles IgG and neutralizing antibody in mothers and control women (range)

Subject	Number	Mean measles IgG in U/ml	Mean reciprocal neutralizing titerd
Control womana	13	9653 (478-70506)	182 (16-1024)
Mother (-) for IgMb	18	4740 (275-23078)	37 (4-192)
Mother (+) for IgMc	6	57531 (19002-77355)	1109 (256-2048)

^a With histories of measles in their childhood.

^b Vaccinated without natural boosting.

^c Vaccinated with recent natural boosting.

^d P < 0.05, Kruskal-Wallis rank-sum test.