The source said the FDA would also ask apple juice producers to start developing the so-called HACCP Plans.

CNN: FDA to make juices safer from E. coli

In terms of food safety inspections, officers who check HACCP plans and their overseers should get more training, said Prof Pennington.

BBC: Safety call after E.coli inquiry

The fundamental flaws in John Tudor and Sons' hazard analysis critical control point (HACCP) plan, which delivers food safety, were also missed, he said.

BBC: Safety call after E.coli inquiry