In the US alone, the daily consumption of antibiotics amounts to 51 tons, of which around 80% is used in livestock, a little under 20% is for human use, and the rest is split between crops, pets, and aquaculture . A meta-analysis published last year in PNAS  found that between 2000 and 2010 the global use of antibiotic drugs increased by 36%, with 76% of the increase coming from developing countries. The researchers projected that worldwide antibiotic consumption would rise by 67% by 2030 due to population growth and the increase in consumer demand.
These frightening statistics prompted CDC director Tom Frieden to issue a warning: “If we are not careful, we will soon be in a post-antibiotic era.” An era when common infections are deadly again.
“We need to be very careful in using antimicrobial agents for everything from hand washing to toothpaste,” Harshini Mukundan, microbiologist at Los Alamos National Laboratory, explains. “Increased selection of drug resistant organisms means that future generations will be helpless in fighting even the most common bacterial infections.”
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