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Subjects
- Communicable Diseases -- etiology[remove]16
- Germ Theory of Disease3
- Bacteria -- pathogenicity1
- Climate1
- Cold Temperature1
- Communicable Disease Control -- methods1
- Disease Outbreaks -- prevention & control1
- Disease Reservoirs1
- Disease Susceptibility1
- Disease Transmission, Infectious1
- Homeopathy1
- New York1
- Pasteur, Louis, 1822-1895.1
- Politics1
- Public Health1
- Respiratory Physiological Phenomena1
- Russia (Pre-1917)1
- Sanitation1
- Sanitation -- methods1
- United States1