Most forms of the common cold and flu are caused by viruses.

大部分的普通感冒和流感都是病毒引起的。

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Both cold and flu symptoms can be eased with over-the-counter medications as well.

非处方药也可以缓解感冒和流感症状。

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It's cold and flu season.

这是个感冒、流感肆虐的季节。

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She said a recent study found that aerosols, tiny droplets which can carry flu and cold germs, were formed at the bottom of a vuvuzela after people had blown into them.

BBC: 10 things about the vuvuzela

Their labels promise everything from fewer tummy aches to faster cold and flu recovery.

CNN: Best cure for stomach troubles-- which probiotics work and why

As with the cold and flu, however, the cough can linger for much longer.

CNN: Mystery cough? 8 possible culprits