During the same period (February to June) the Trousseau Hospital, where the serum was not used, had 520 cases, with 316 deaths = 60.0.
The cases at the Hospital for Sick Children must be divided into those that required tracheotomy and those that did not require it:—
Mortality among Cases not requiring Tracheotomy.
| In 1890 47.30 " 1891 46.64 " 1892 38.8 " 1893 32.02 | } | Average = 33.94. |
During the serum-period, the mortality of these cases was 12.0. At the Trousseau Hospital, without the serum, the mortality of these cases during the same period was 32.0.
Mortality among Cases requiring Tracheotomy.
| In 1890 76.35 " 1891 68.36 " 1892 74.6 " 1893 73.45 | } | Average = 73.49. |
During the serum-period, the mortality of these cases was 49.0. At the Trousseau Hospital, without the serum, the mortality of these cases during the same period was 86.0.
Setting aside, out of the 448 children, those cases of "membranous sore throat" or "pseudo-diphtheria," in which the Klebs-Loeffler bacillus was not found, there remain 320 cases where it was found. Of these 320 children, 20 were just dying on admission, and did not receive the serum. Of the 300 who received it, 78 died = 26.0. Before the serum-period, the mortality of these cases at the same hospital was about 50.0. The complications of diphtheria, such as paralysis, were much less frequent during the serum-period than they had been before it.