Read the full story in Nature.
The use of antibiotics in animal farming — a major contributor to antimicrobial resistance — is expected to grow by 8% between 2020 and 2030 despite ongoing efforts to curtail their use, according to an analysis.
Overuse of antibiotics in agriculture is thought to be a major driver of the rise in humans of bacterial infections that cannot be treated with antibiotics. Although antibiotics can be necessary to treat infections in livestock, they are often used to speed up animal growth and prevent diseases among animals in crowded, unsanitary conditions.
Many governments have struggled to make or enforce rules to decrease antibiotic usage. For instance, although a number of countries, including the United States and much of Europe, ban the use of antibiotics that promote growth, manufacturers can just say they are marketing the drugs to prevent disease.