Site icon aviNews International, poultry information

Salmonella vaccine for poultry contributed to rise of antibiotic-resistant

An investigation into the evolution of Salmonella bacteria infecting Brazilian poultry shows that the introduction of a Salmonella vaccine, combined with increasing antibiotic usage by Brazilian farmers, has led to the rise of strains that are more antibiotic-resistant, but less likely to cause disease in humans.

Andrea Micke Moreno of the University of São Paulo, Brazil, and Alison Mather of Quadram Institute Bioscience, UK, report these findings in a new study publishing June 2nd in the open access journal PLOS Genetics.

The bacterium Salmonella enterica is a common cause of food poisoning in humans that frequently results from contaminated poultry.

Brazil is the world’s largest exporter of chicken meat globally, and a team led by Micke Moreno and Mather wanted to know if the strains of Salmonella present in Brazil were contributing to food poisoning cases in countries that import their products.

These bacteria possess genes that make them resistant to three types of antibiotics. But despite their rise in Brazil, these antibiotic-resistant bacteria have caused very few cases of Salmonella in humans in the UK and have not spread to domestic chickens.

Overall, these findings suggest that the use of the Salmonella vaccine in Brazil, along with greater antibiotic usage, enabled the rise of drug-resistant forms of Salmonella, but that these bacteria have not led to greater numbers of food poisoning cases in the UK.

The researchers point out that their evaluation of

TO CONTINUE READING REGISTER IT IS COMPLETELY FREE Access to articles in PDF
Keep up to date with our newsletters
Receive the magazine for free in digital version
REGISTRATION
ACCESS
YOUR ACCOUNT
LOGIN Lost your password?

Exit mobile version