Bacteria Spreads
By Air: - airborne water droplets
– sneezing, coughing, spitting - Most airborne diseases affect the respiratory tract
– E.g. TB, scarlet fever, whooping cough
• By Sexual Contact:
– E.g. syphilis, gonorrhea
• By Insects:
– Examples: Lice- typhus
• Ticks- Lyme disease
• Fleas- carry bacteria that causes the Plague or “Black Death”
• By Touch:
– E.g. Leprosy, Staph infections
• By Contaminated Food/Water:
– E.g. Cholera, Salmonella and E.coli
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