He fell sick with flu.

他得了流感。

youdao

He fell sick with the flu.

他得了流感。

youdao

I was so sick, achy and bedridden that I realized all my other bouts with "flu" were really just bad colds or upper respiratory infections.

当我很不舒服，感到很痛，卧病在床时我才明白自己以前和“感冒”做的斗争其对象都是着凉或上呼吸道疾病。

youdao

Mr Evans said while nothing could be done about people off sick with flu for example, stress could be tackled.

BBC: 21,000 teaching days lost to stress in Wales in 2009

Try this thought experiment: Suppose the Dow Jones Industrial Average fell to 5000 and stayed there, supine and sick with Asian flu, for several years.

FORBES: Digital rules

For all ages who were vaccinated, there was a 56 percent chance of avoiding getting sick with the flu from any of the three strains in circulation.

NPR: Q&A: Weighing The Value Of Less Effective Flu Shot