Influenza : $b An epidemiologic studyVaughan, Warren T. (Warren Taylor)
History
Influenza : $b An epidemiologic study
Vaughan, Warren T. (Warren Taylor)
Influenza
At the same time C. H. Jones described an epidemic of the same disease
in Baltimore. The symptoms were described as headache, backache,
limb-ache, with a slight elevation of temperature, seldom more than
102°. Catarrhal symptoms developed secondarily and were not so prominent
a feature as in former epidemics. There were some gastric symptoms,
usually consisting of vomiting and nausea. Jones quotes no statistics,
but feels sure that the infection was more extensive than at any period
since 1895.
Coakley and Dench describe throat and ear complications as they saw them
in New York. From this we may assume that the disease was present at the
same time in New York City.
The following chart, derived from the U. S. Vital Statistics Report
shows the increase in the death rates from influenza in 1900 and 1901;
that of 1907 and 1908, and finally an increase to 26.4 per 100,000 in
1916, which reflects the epidemic beginning in the latter part of 1915:
_Influenza and Pneumonia Mortality in the United States Registration
Area for Each Year Since 1900._
═════════════════╤═════════════════════════════════════════════════════
Year. │ Annual death rates per 100,000.
─────────────────┼─────────────────┬─────────────────┬─────────────────
„ │ Pneumonia. │ Influenza. │ Combined
│ │ │ diseases.
─────────────────┼─────────────────┼─────────────────┼─────────────────
1900│ 158.6│ 22.8│ 181.4
1901│ 133.5│ 32.2│ 167.7
1902│ 124.7│ 10.1│ 134.8
1903│ 122.6│ 18.5│ 141.1
1904│ 136.3│ 20.2│ 156.5
1905│ 115.7│ 18.8│ 134.5
1906│ 110.8│ 10.3│ 121.1
1907│ 120.8│ 23.3│ 144.1
1908│ 98.8│ 21.3│ 120.1
1909│ 96.3│ 13.0│ 109.3
1910│ 147.7│ 14.4│ 162.1
1911│ 133.7│ 15.7│ 149.4
1912│ 132.3│ 10.3│ 142.6
1913│ 132.4│ 12.2│ 144.6
1914│ 127.0│ 9.1│ 136.1
1915│ 132.7│ 16.0│ 148.7
1916│ 137.3│ 26.4│ 163.7
─────────────────┴─────────────────┴─────────────────┴─────────────────
Public-domain text, read in full here on John Shaqi.
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