between 1974 and may 1981 , we isolated l. monocytogenes from four of 5,255 specimens ( rectal , vaginal and placental swabs ; blood ; spinal fluid ; semen ; necropsy material ) which came from eight human populations ( neonates , children , adult men , and pregnant and nonpregnant women ) and from 161 animals .
C0021289
neonates
C0008059
children