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American Red Cross Text-Book on Home Hygiene and Care of the Sick · American National Red Cross — chapter 1 of 30 · ~65 words · public domain

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CAUSES AND PREVENTION OF SICKNESS 1

Communicable diseases, 1. Micro-organisms and bacteria, 1. Parasites, 3. Structure and development of parasites, 4. Bacteria, 4. Shape, 4. Size, 5. Motion, 5. Multiplication, 5. Spores, 7. Distribution, 8. Protozoa, 8. Visible parasites, 8. Transmission of pathogenic organisms, 9. Defenses of the body, 12. Immunity, 13. Vaccination and inoculation, 15. Carriers, 17. Non-communicable diseases, 20. Physical examinations, 22.

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