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Nowadays, the infectious disease breaks out now

and then. It causes so many problems for people that a lot of people

can't go to school or work. What's worse, some get seriously

ill or even die.

W hat should we do to avoid being infected by the disease? .

First of all, we should keep good habits, such as keeping

clean, eating healthy food, taking enough exercise and so on.

Besides, we should not go to crowded places. I ask but not

least, if we feel uncomfortable or have a fever, we must go to

hospital at once for limely treatment.

Happiness lies first of all in health. Only in this way can

we live a healthy and happy life.