1.   Nobody guessed that such a rare disease would become a pandemic.

2.   When patients were grouped according to the severity of the attack, however, a stepwise fall in polyunsaturated fatty acids was observed as the disease became more severe.

3.   Almost every major infectious disease is becoming resistant to available medicine, and scientists are not developing new medicines fast enough to keep up.

4.   As the disease becomes progressively worse, shortness of breath occurs, Doherty says.

5.   But in recent decades, all recruits have been routinely immunized and the disease has become rare in this population.

6.   But once the disease becomes active, it can be transmitted through the air in confined areas over a long period of time.

7.   Caused by unexplained damage to brain cells, the disease can eventually become debilitating, although the thought process is thought to remain unaffected by the disease.

8.   Four years ago, a new class of anti-AIDS drugs brought hope that the deadly disease could become a chronic, manageable condition such as diabetes.

9.   In humans, the disease becomes new-variant Creutzfeldt-Jakob disease, also known as CJD.

10.   Only recently has the disease become a serious problem in America.