Question: What is the hardest stage in a Parasitic disease?

Deuan Jones answered on 23 Jun 2010:

This depends on the disease, but in the disease I work on – African Sleeping sickness – parasites start living in your blood which causes a severe recurring fever – so that’s when you probably feel the worst. But later the parasites get into the fluid around your brain and you enter into a coma and eventually die (unless you get treated).