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Oregon Health Authority

Safe Antibiotic Use

Two main kinds of “bugs” can cause illness: bacteria and viruses

Antibiotics only kill bacteria. Illnesses caused by bacteria, like strep throat, can be treated with antibiotics.

Antibiotics have no effect against illnesses caused by viruses. 

Taking antibiotics when they are not needed helps resistant bacteria grow. When bacteria become resistant the antibiotics that once combated them are no longer effective.

These resistant bacteria can stay in your body or spread to other people. Resistant bacteria can cause severe illnesses that are difficult and expensive to treat. Highly resistant bacteria (“superbugs”) sometimes cause infections that can’t be cured.

Using antibiotics wisely will help slow the spread of resistant bacteria. This will help keep our life-saving antibiotics effective for years to come. 


Protect yourself against resistant bacteria!

  • Never take antibiotics to treat viral illnesses like colds or the flu. Antibiotics have no effect against viruses.
  • When you are prescribed an antibiotic, take every dose, even if your symptoms go away. Taking part of the prescription only treats part of the infection.
  • Never share antibiotics. These strong medications can cause dangerous side effects. They should only be used under a doctor’s care.
  • Wash your hands well and often. This is the best way to keep from getting sick.
  • Ask your doctor about pneumococcal (pneumonia) and influenza (flu) vaccinations.
  • If you or your child is suffering from a virus such as cold or flu consult our Upper Respiratory Treatment Guides for symptom relief.

Antibiotics won’t help your body fight a cold or the flu

Following are typical illnesses with common causes:
 
Illness Virus Bacteria Antibiotics Needed?
Colds and flu
blue mark 
 
No
Runny nose
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No
Cough
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No
Bronchitis
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No
Sinus infection
blue mark 
blue mark 
Maybe
Ear infection
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blue mark 
Maybe
Pneumonia
blue mark 
blue mark 
Usually
Strep throat
 
blue mark 
Yes

Learn how to manage symptoms of common illnesses


Ounce of Prevention

There are easy ways to prevent getting sick, like hand washing, cleaning and disinfecting surfaces.

Learn more about reducing the spread of disease.