antibiotics and antibiotic resistance. when were antibiotics discovered? 1928 by alexander fleming;...
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Antibiotics and Antibiotic Resistance
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When were antibiotics discovered?
1928 by Alexander Fleming; Penicillin
Fleming receiving Nobel Prize in 1945
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What did people die from in early 1900’s?
Mostly infectious diseases – many caused by bacteria
Thanks to mass-production of antibiotics
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How common is the use of antibiotics?
-1998, 80 million prescriptions filled in U.S. (12,500 tons)
- Additional 18,000 tons due to use in farm animals
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So what happens with lots of antibiotic use?
Bacteria become resistant to antibiotics
(70% of bacteria which cause infections in hospitals are resistant to at least one antibiotic)
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How big of a problem are antibiotic-resistant bacteria?
In 2005, more people died from MRSA (a multiple antibiotic-resistant bacteria) than from AIDS.
Most are connected with a hospital stay, but 15% occurred in people with no known health risk.
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How do bacteria become antibiotic-resistant?
Natural Selection
1.Genetic variation.2.Overproduction of offspring.3.Competition for resources.4.Those that survive can pass on genes.
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How can we slow the development of antibiotic-resistant bacteria?
1.Don’t take antibiotics for a viral infection.
2. Take entire prescription.
3. Don’t save antibiotics.
4. Don’t use somebody else’s medication.(old; not correct dose)