Joining a national movement for food safety, restaurant inspectors in Philadelphia have abandoned the "floors, walls, ceilings" focus that experts say catches chipped paint but often misses real public health threats such as undercooked food and chefs' unwashed hands.
Instead, the city is phasing in a more scientific, "risk-based" approach that emphasizes food workers' knowledge and behavior - do they know how contamination is spread and how to prevent it? - and calls for more frequent inspections of eateries that pose greater risks.
Philadelphia is playing catchup in adopting changes that most counties around here have already made, in some cases many years ago. Yet the city's new approach is expected to mean more inspections of the 12,621 establishments that sell or serve food - four times a year at institutional kitchens, for example - than most places.