The campaign of Knowing More About AIDS needs to be carried on, and for this stage the emphasis is put on the way the disease is contracted.

普及艾滋病知识的活动需要继续开展，这个阶段的重点放在这种病的传播途径。

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And in San Diego, a measles outbreak in 2008 was traced to an unvaccinated 7-year-old boy who contracted the disease in Switzerland and passed it on to 11 other unvaccinated children, including in his family, his school and his pediatrician's office.

WSJ: Where Could The Next Outbreak Of Measles Be?

They vary depending on how the disease was contracted, but symptoms usually occur within seven days.

CNN: Ten things you need to know about anthrax

In the late 1990s, De Preist contracted kidney disease and had to go on dialysis.

NPR: Conductor James DePreist