61.   Once new leaves become infected by scab in spring, they can spread the disease on the tree.

62.   Others say migrating dinosaurs spread diseases that rapidly infected and killed off the population.

63.   Only eight types of ticks in the United States spread disease to humans.

64.   Only outdoors can she be prevented from spreading the disease to the animals and people around her.

65.   Researchers are now asking if poorly trained cosmetologists and barbers using dirty instruments could be unwittingly spreading diseases such as AIDs, hepatitis B and C and viral infections.

66.   Recent research shows that cattle and other animals infected with prion diseases can remain asymptomatic for many years and yet still spread the disease.

67.   Sharing grazing-land or water, as well as eating infected flesh, can spread the disease.

68.   She said that in South Asia, the disease was spread in somewhat different ways.

69.   She said the treaty was written to prevent nations from developing weapons, a provision she said was intended to bar even initial research on munitions that spread disease.

70.   She was upset that sharing breast milk could spread contagious diseases, including AIDS.