United States Centers for Disease Control and Prevention Data estimate:
Antibiotic resistance happens when antibiotics kill bacteria causing the illness as well as the good bacteria protecting the body from infection, the drug resistant bacteria are now allowed to grow and take over, then some of the bacteria may give their drug resistance to other bacteria causing more problems.
Penicillin was discovered by Alexander Fleming in 1928, and by the 1940's, a Penicillin-resistant Staphylococcus had evolved.
The Centers for Disease Control and Prevention estimates 30% of antibiotic prescriptions written are not needed, and that the 70% of antibiotics prescribed may be needed but should be broad spectrum and for a short duration only.
The following agencies are working to address Antibiotic Resistance: United Nations, G 20, WHO, US CDC, European CDC, and the Transatlantic Task force on Antibiotics.
Antibiotic Resistance spreads by all of the following except: