Ordinarily the period of
incubation is from three to four days, with a premonitory fever
of from twenty-four to seventy-two hours' duration, when the rash
appears; this case must therefore have been infected in utero.
Lomer of Hamburg tells of the case of a woman, twenty-two years,
unmarried, pregnant, who had measles in the eighth month, and who
gave birth to an infant with measles. The mother was attacked
with pneumonia on the fifth day of her puerperium, but recovered;
the child died in four weeks of intestinal catarrh. Gautier found
measles transmitted from the mother to the fetus in 6 out of 11
cases, there being 2 maternal deaths in the 11 cases.
Netter has observed the case of transmission of pneumonia from a
mother to a fetus, and has seen two cases in which the blood from
the uterine vessels of patients with pneumonia contained the
pneumococcus. Wallick collected a number of cases of pneumonia
occurring during pregnancy, showing a fetal mortality of 80 per
cent.
Felkin relates two instances of fetal malaria in which the
infection was probably transmitted by the male parent. In one
case the father near term suffered severely from malaria; the
mother had never had a chill. The violent fetal movements induced
labor, and the spleen was so large as to retard it.
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