Spread of infection

Sources of infection

  1. Animals
    • Humans - TB, MM, influenza, neisseria, MRSA
    • Animals - zoonoses, vets, mos
  2. Plants
    • Soil
  3. Environment
    • Soil
    • Air

Routes of infection - the "I"s

  • Inhalation / droplet spread
  • Ingestion
  • Intercourse
  • Innoculation - catherisation, injection, insects
  • In-utero: trans

Endemic: Exists continously in a population, usually of low prevalence
Epidemic: Sporadic disease in a population, usually involves large numbers of people
Pandemic: Epidemic that affects many parts of the world