1928 Alexander Fleming, a Scottish scientist, discovers the first antibiotic, penicillin, but is unable to isolate it in its purest form.	1941 Antibiotics come into worldwide prominence when concentrated penicillin is produced by biochemist Ernst Chain.	1944 Enough penicillin is available to treat wounded soldiers and severely ill civilians in North Africa and Europe during World War II.	1951 The Food and Drug Administration approves the use of antibiotics in farm feed, many antibiotics approved are the same ones used to treat humans.	Late 1950s Scientists add various chemical groupings to the core of the penicillin molecule to generate semi-synthetic versions.	1967 The first penicillin-resistant strain of pneumonia is reported in New Guinea.	Sept. 18, 1997 News reports reveal that many diseases have become resistant to antibiotics. 25% of bacterial diseases can only be treated by the strongest antibiotics.	1998 The FDA proposes a framework for evaluating the safety of antibiotics for livestock and its capacity for promoting antibiotic-resistant bacteria in humans.	December 14, 1998 Four antibiotics are banned for use in animal feed by European Union (EU) agriculture ministers because of concerns that their entry into the food chain could increase the risk of bacterial resistance to certain drugs in humans.	March 24, 2000 A government advisory committee recommends that the FDA approve a new type of anti-biotic to fight drug-resistant bacteria. It's called Zyvox, and it's designed to combat pneumonia, skin problems and other hard-to-treat bacterial infections.	Jan. 18, 2001 Human Health Services unveils a plan to combat antimicrobial resistance. Click here to read the CDC report.