Effect on Human Health

Responsible use of antibiotics helps all of us.




Withdrawal Period

By law, animals given an antibiotic cannot be processed until the medicine leaves their bodies (known as a withdrawal period). Meat is routinely tested to ensure no unsafe residue is present.

Handling Meat

Cooking and handling meat properly eliminates exposure to bacteria.

Public Health Threats

Risk Analysis

Antibiotic use reduces bacteria

The use of antibiotics in an animal leads to an overall decrease in bacteria, improving food safety and animal health. The issue of resistance relates to any remaining bacteria, which may have a higher likelihood of resistance to the specific class of antibiotic used.

Cooking meat to the proper temperature kills all bacteria, eliminating the possibility of exposure to resistant bacteria. It is also important to handle raw meat properly to prevent spreading bacteria to other foods.

It is important to begin with a common understanding of the term antibiotic resistance. You may have heard the term antibiotic residue and wondered whether it is related to antibiotic resistance. The two are not related. Antibiotic resistance refers to bacteria that evolve to the point they are not easily killed by antibiotics. Antibiotic residue refers to molecules that remain in meat from animals that have been treated with antibiotics. There are multiple safeguards in place to ensure meat is safe and does not contain antibiotic residues, including mandatory antibiotic withdrawal periods in animals and routine testing of meat, milk and eggs by the U.S. Department of Agriculture and food companies.

Antibiotics important to human medicine

The animal health community is concerned about the public health risk of antibiotic resistance. Responsible use of antibiotics by doctors and patients, as well as veterinarians and farmers, helps reduce the risk of antibiotic resistance.

The Center for Disease Control (CDC) identified the most concerning public health threats from antibiotic resistant bacteria. None of the most urgent threats have any relation to farm animals. On the broader CDC list, which includes less urgent threats, only two of 18 involve bacteria associated with farm animals.

Although there is broad scientific acknowledgement that the use of antibiotics in people is the primary source of antibiotic resistance, antibiotics must be used responsibly in food animals to minimize agriculture’s contribution to antibiotic resistance.

Limiting use of agricultural antibiotics

The agricultural use of antibiotics that are important to human medicine will be limited to allow only for the treatment, control and prevention of disease in animals – not for growth promotion – by January 2017 in the United States. Transitioning to this approach allows farmers to adjust their management practices to ensure food safety and animal health while minimizing the risk of antibiotic resistance.

Risk analysis

There remain unanswered questions about the source of human antibiotic resistance.

Studies conclude there is a 1 in a billion chance of treatment failure from antibiotic resistance related to the use of common animal antibiotics. To put that into context, you are thousands of times more likely to die from a dog bite or lightning strike than from treatment failure related to the use of antibiotics in animals.


  • Public health consequences of macrolide use in food animals: a deterministic risk assessment.
  • National Safety Council: Risk of dying from a dog bite is 1:116,448 and from lightning strike is 1:164,968