The spread of bacterial & viral diseases in the twentieth century

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The spread of bacterial viral diseases in the twentieth century
- Spanish Flu
  - 1918, a pandemic spread around the world.
  - up to 40 million people died from this pandemic.
  - Troops in WW1 helped to transmit the disease.
- The HIV/AIDS threat
  - 1981 - first case of Aids reported in the USA.
  - Spread through blood or body fluids of infected people.
  - it destroys the body's immune person.
  - by 2000 - 30 million infected with AIDS.
  - Worst affected area was Africa - 63% infected.
1918 - 19
- 7 million deaths were reported in Spain.
- It killed 280,000 people in the UK.

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