Too soon to blame romaine lettuce for E. coli outbreak, CDC says

Tracking E. coli outbreak

“FDA did not always have an efficient and effective food-recall process that ensured the safety of the Nation’s food supply. Specifically, we found that the FDA could not always ensure that firms initiated recalls promptly,” the report reads.

Consumer groups have often criticized the FDA, saying they think the agency is far too cozy with the companies it regulates. The FDA says it’s far better to get companies to trust them and cooperate.

But in this case, it’s just too soon to blame any single farm or distributor, Williams said.

Genetic fingerprinting shows the E. coli strain that has sickened people in the U.S. is the same strain that made more than 40 people ill in Canada and killed one.


FDA expands recalls in 2015 due to E. coli

“What we have been doing: step one is reaching out to the people who are ill,” Williams said.

“We ask about foods they ate, places they ate in during the week before they got sick,” he added. “Where did you have it? Did you have it at home, have it in a restaurant, get it in a grocery store?”

But because it’s been weeks, it can be hard to remember. And not everyone who got sick remembers having ever eaten romaine lettuce or even eating raw leafy greens, Williams said.

Not everyone who gets sick goes to a doctor, either, and not every doctor takes a stool sample to see what’s causing the illness. Plus, lettuce has a short shelf life, meaning almost all samples that could be tested have been tossed out by now.

So many, many more people could have been infected but the CDC doesn’t have the material it needs to help track down the source.

The cases are scattered across 13 different states from coast to coast: California, Connecticut, Illinois, Indiana, Michigan, Nebraska, New Hampshire, New York, Ohio, Pennsylvania, Virginia, Vermont and Washington.

“We are trying to connect what people may have had in common across the entire country,” Williams said.

So far, the CDC has found out enough to know that no single point of sale, such as a grocery store or restaurant, is involved. So now they have to trace it back further, to a distributor or perhaps even to a single farm somewhere.

Foodborne illnesses are extremely common. The CDC estimates that each year, 48 million Americans are made sick by a foodborne illness. Of those, 128,000 are sick enough to be hospitalized, and 3,000 die.

E. coli is only one of many causes. It can get into food when someone touches it, when it goes through processing equipment, or at a farm, perhaps if it mixes with some other contaminated source such as water used to clean off a whole batch of produce.

It’s almost impossible to wash off something like E. coli from a lettuce leaf and sometimes it’s taken up inside the leaf itself.

“Contamination can take place any time, from farm to fork,” Williams said.

In 2006, an outbreak of E. coli in spinach was eventually

traced to wild pigs that had wandered through fields of fresh produce in California.

If a similar situation caused this outbreak, then a fresh wave of E. coli cases could be looming, said Williams.

Romaine lettuce, for instance, is being harvested now in California and Arizona.

“How do you know the field next door didn’t get contaminated also, and it’s now starting to get harvested?” he asked.