Antibiotics save untold numbers of human lives every day. Modern medicine depends on their ability to treat and prevent infections such as pneumonia, tuberculosis, and staph. Yet drug-resistant bacteria are spreading in the nation’s communities and too often antibiotics are taken for granted.

Tens of thousands of Americans die each year from infections, and many of those deaths are associated with bacteria that are resistant to treatment by one or more of these drugs.

Test your knowledge of antibiotics.