How Bacteria Spreads

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