31.   Much of the optimism comes from growing clinical evidence that drug mixtures are better than individual medicines at controlling the disease.

32.   Patients can usually control the disease through diet and exercise, although insulin shots are sometimes needed.

33.   Powdery mildew is a fungal disease that does not thrive with moisture, and a good washing weekly can help control the disease.

34.   The disease was usually controlled by replanting and by moving vines away from streams or ponds.

35.   The new model shows that when human cases occur, some methods used to control the disease may only make the situation worse.

36.   The rising tide of resistant strains is complicating efforts to control the disease.

37.   There are not enough nurses and specialists in the worst-hit areas to control the disease.

38.   Then as now, however, officials defended the approach as being no different from the sort taken elsewhere to control infectious diseases like leprosy and tuberculosis.

39.   They say that by reopening the debate on HIV and AIDS, Mbeki is hampering efforts to control the disease.

40.   Throughout most of history, people had as little ability to control infectious diseases as we have to control earthquakes today.