McDonald's is to stop selling chicken injected with antibiotics in the US.
The world's biggest restaurant chain said that it’s 14,000 US restaurants will be free of antibiotics which are also used for treating humans, within two years.
The change comes after concerns that the overuse of antibiotics in chicken may affect the drugs' effectiveness in people fighting diseases.
Numerous producers give poultry antibiotics to help them grow quicker, but overuse of the drugs could make them to reduce its effectiveness for humans using them to treat illness and disease.
Marion Gross, senior vice-president of North America supply chain, said that McDonald's "believes that any animals that become ill deserve appropriate veterinary care and our suppliers will continue to treat poultry with prescribed antibiotics". But she added that, after treatment, the bird "will no longer be included in our food supply”.
