6General Characteristics of Early Epidemic Outbreaks.
22Origin of the 1918 Pandemic.
7Symptoms in Former Epidemics.
23An Investigation of Influenza in Boston During the Winter of 1920.
8Manner of Spread.
24Morbidity.
9General Manner of Spread in Individual Localities.
25Mortality.
10Spread in Countries and Continents.
26An Intensive Study of the Spread of Influenza in Small Groups of Closely Associated Individuals.
11Influenza Epidemics Since 1893.
27Immunity.
12Occurrence Since 1893.
28Influenza and Other Diseases.
13The Pandemic of 1918.
29Comparison of Influenza with Other Epidemic Diseases.
14Date of First Increased Prevalence in Various Localities.
30The Prevention and Control of Influenza.
15Autumn Spread in the United States.
31BIBLIOGRAPHY.
16Recrudescences.
32APPENDIX
