the frequency of lp-x positive results was 85.7 % in the group of infants younger than 24 weeks ( 91 samples of 45 infants were tested ) whereas in the group of infants of an age between 24 weeks and 14 years ( 159 samples of 113 children were tested ) 16.35 % positive results were obtained .
C0021270
infants
C0008059
children