The doctor told him that he might have been infected with leprosy bacteria.

The possibility of that plan succeeding is high.

He may say he's a doctor, but he's actually a veterinarian.

To prevent infection, don't forget to wash your hands.

My father is a doctor.

That is a possible solution.

The possibility of that plan succeeding is high.

Education about sex is very important.

He is my best friend.

The prevention of venereal diseases is most important in safe sexual behavior.