なんちゃって英語・英会話コミュのAntibiotics

I think that in Japan, many doctors tend to use antibiotics
easily except bacterial infection.
There are some problems if antibiotics are used for a long time.

One is tolerance, that is, some antibiotics are not effective
for bacterial infection in the future, and in some patients,
necessary bacteria in their small intestines will die.
Another problem is entero-colitis due to antibiotics.

It should be avoided that antibiotics are used for a long time.
Common cold or influenza are viral infection, and so
theoretically antibiotics are not effective.

But I think that many patients have bacterial infection
at the same time, because bronchial tubes become rough
due to viral infection.

In that situatuin it's easy that patients have bacterial
infection with virus, and so I think that it's better
to use antibiotics for three or five days.
In practice antibiotics are useful for patients of common
cold or influenza.