Medical literature prior to 1932 contains only occasional reference to poliomyelitis complicating pregnancy. Thus, McGoogan,1 writing about this time, found only five cases reported in the literature, to which he added three he had observed in Nebraska. The type of case reported was usually that of severe or fatal poliomyelitis occurring in the third trimester of pregnancy.
Baker and Baker2 stated that, during the Minnesota epidemic of 1946, 695 patients with acute anterior poliomyelitis were admitted to the Minnesota General Hospital between July 29 and September 21. There were 115 women in this group, 30 of whom were pregnant. Analysis of their cases and of those reported in current literature revealed that 25.3 per cent of the women in the childbearing period cited in these studies were pregnant. The percentage of pregnant women among female poliomyelitis patients of the childbearing age was more than four times that of
POLIOMYELITIS IN PREGNANCY. JAMA. 1951;145(14):1068–1069. doi:10.1001/jama.1951.02920320042013