Only when the bacteria become active do people become ill with TB.

只有在这些细菌变为活动性时，人们才罹患结核。

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Some 9 million people become ill with active TB and nearly 2 million die each year.

每年，共有大约900万人罹患活动性结核病，近2百万人死亡。

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We can't stop the tide of flu from coming in, but we can help reduce the number of people who become ill with it.

我们不能停止流感到来的趋势，但我们能帮助减少患病的人群数量。

youdao

This involves strategies for protecting, preventing and treating children who become ill with pneumonia.

VOA: standard.2009.11.02

(SAYING) Dr.Wafaa El-Sadr from Columbia University in New York says doctors want to reach people with HIV before they become visibly ill, especially pregnant women.

VOA: standard.2010.07.17

But the next day she did become ill with a chest infection.

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Twenty-seven people in 15 states have become ill with E. coli infections, with about a third requiring hospitalization, the Centers for Disease Control and Prevention said Friday.

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Diabetics who are infected with TB become ill with the disease at three times the ratio of the general population because their immune systems are compromised, said Dr. Seaworth, who is also a professor of medicine at the University of Texas Health Science Center-Tyler.

WSJ: TB's Global Resurgence Amplifies U.S. Risk