12 Dec 2018 --- McDonald’s is to set limits for antibiotic use in its beef supply chain by the end of 2020. The fast food giant has announced a new policy to reduce the overall use of antibiotics important to human health, as defined by the World Health Organization (WHO), which applies across 85 percent of its global beef supply chain. As one of the largest food chains, the company could be setting the standard for other industry players in the fight against antibiotic resistance.