Antibiotics are miraculous drugs that help us fight off bacterial infections. But sometimes bacteria evolve resistance against antibiotic treatment. Unnecessary use of antibiotics helps this antibiotic resistance spread faster. So it is important to study how much antibiotics people consume worldwide.

We analyzed antibiotic-use data from 76 countries between 2005 and 2015. We found that consumption of these medications stayed constant in most high-income countries, but has increased rapidly in middle and low-income countries. (But per capita consumption there is still lower.)

Our analysis suggests that the main reason for this was the growth in income, which made the medications more accessible. But this also caused an increase in unnecessary use. Economists predict that income will continue to grow in the next 15 years. So we need new strategies to reduce unnecessary antibiotic consumption and resistance.

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Summary of research
Scientists analyzed data on antibiotic use from 76 countries between 2005 and 2015 and found that the consumption of these medications has increased rapidly in middle and low-income countries.
Reading level
Scientific field
Key words
NGSS standards
AP Environmental science topics
IB Biology topics
Scientific methods
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Location of research
Scientist Affiliation
Publication date
August 2019

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