The other day, there was a topic of "flu" in "Practical Business English" of NHK radio program.

As I expected, "hard-washing" seems to be the most effective way to prevent infect from flu.

In my case, I always carry an alcohol spray can, and put spray on tips of my fingers.

Thought I don't know whether it is effective, I have been able to avoid the infections.

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In the radio program, one of the methods how to wash hands was introduced,

"Washing hand with singing "Happy Birthday" by the end of the song.”

So I tried it soon.

At the day that I came back home late at night, I was singing a song alone at the washing stand.

At that time, I could hear a small and fearful voice from behind.

"Hey, my darling? Are you O.K.?"