Britian's top health official says that the reliance on antibiotics could have a catastrophic effect on human health.

Sally Davies, the chief medical officer in the UK, says that the growing resistance to the drugs is making it more difficult to treat people with bacterial infections, prompting her to call for restricted usage.

She is calling for pharmaceutical companies to focus on developing new drugs.

Al Jazeera's Emma Hayward reports.

Source: Al Jazeera