1.   At that time we had to make the assumption that the disease was spreading and take action to stop it.

2.   At the beginning of an epidemic only a few individuals are infected, so the disease spreads fairly slowly.

3.   Braintree Council is desperate for the disease not to spread to the district.

4.   Diseases spread quickly among people living in insanitary conditions.

5.   Doctors are unable to explain why the disease spread so quickly.

6.   Infectious diseases that now spread more easily because of increased worldwide travel.

7.   Meyer and his team were the first to show how the disease spreads from animals to humans.

8.   The disease is spreading so fast that it is going to take years to bring it under control.

9.   The disease spread quickly because of poor living conditions and inadequate health care.

10.   The disease spread rapidly amongst the poor.