Wash your hands, and cover your mouth/nose when you cough or sneeze. Try to be clean all the time. If you touch metal handles or doors in a public place, be sure to wash your hands afterwards, and don't touch your face.
Dirty bacteria are the causes of disease and infection but the antibodies in your immune system (good bacteria) fight against it, curing you (eventually)
medicine
There are no known diseases ozone can cause. However there are many that claim ozone can cure diseases like Lymes disease and HIV in the same manner it is used to kill bacteria in our drinking water.
Yes, they both do. The difference is that you can cure diseases from bacteria but not from viruses. You can prevent both kinds with vaccines.
Bacteria
Many house flies carry diseases that are caused by bacteria or viruses. However, no housefly has the cure for these diseases.
Different bacteria cause a lot of different diseases.
None, but they cause many.
Drugs
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There are many different kinds of bacteria, and those cause many different kinds of diseases. For instance, streptococcus can cause meningitis.
AIDS
Penicillin is used to kill bacteria that cause damage. It kills the bacteria which can cause ear damage.
A small portion, about 1%, of bacteria cause diseases. These are called pathogens or sometimes a germ.