1.   If untreated, the disease could attack the brain and nerve tissue.

2.   More specifically, the disease attacks the macula, the few square millimeters of cells in the center of the retina that are responsible for central vision.

3.   Once the disease attacks the heart, these symptoms may gradually appear.

4.   The disease attacked, circled the globe and died out within a year.

5.   The disease attacks different people with different intensities.

6.   The disease attacks the brain and spinal cord, leading to loss of muscle control, paralysis and eventually respiratory failure.

7.   The disease attacks the brain and spinal cord, leading to loss of muscle control, paralyzing its victims and eventually causing respiratory failure.

8.   The disease attacks the eyes, kidneys and heart, although proper medical treatment can reduce the effects.

9.   The disease attacks the retina, the layer of light-sensitive cells at the back of the eye.

10.   The disease attacks the lungs, debilitating the victim with fever, fatigue, coughing and severe loss of weight.