Identifying foodborne outbreaks using social media

As a new survey shows 95% of chefs cite customers getting sick as their top concern, a computer system developed by Columbia University with Health Department epidemiologists can detect foodborne illness and outbreaks in New York City restaurants based on keywords in Yelp reviews.

Using Yelp, 311, and reports from health care providers, the Health Department has identified and investigated approximately 28,000 complaints of suspected foodborne illness overall since 2012 and helped Health Department staff identify approximately 1,500 complaints of foodborne illness in NYC each year, for a total of 8,523 since July 2012.

Improvements to the computer system are the subject of a joint study published this week by the Journal of the American Medical Informatics Association. The Health Department and Columbia continue to expand the system to include other social media sources, such as Twitter, which was added to the system in November 2016. The computer system allows the Health Department to investigate incidents and outbreaks that might otherwise go undetected. New Yorkers are encouraged to call 311 to report any suspected foodborne illness.

“Working with our partners at Columbia University, the Health Department continues to expand its foodborne illness surveillance capabilities,” said Health Commissioner Dr. Mary T. Bassett. “Today we not only look at complaints from 311, but we also monitor online sites and social media. I look forward to working with Columbia University on future efforts to build on this system. The Health Department follows up on all reports of foodborne illness – whether it is reported to 311 or Yelp.”

Each year,

“Effective information extraction regarding foodborne illness from social media is of high importance–online restaurant review sites are popular and many people are more likely to discuss food poisoning incidents in such sites than on official government channels,” said Luis Gravano and Daniel Hsu, who are coauthors of the study and professors of Computer Science at Columbia Engineering. “Using machine learning has already had a significant impact on the detection of outbreaks of foodborne illnesses.”

“The collaboration with Columbia University to identify reports of food poisoning in social media is crucial to improve foodborne illness outbreak detection efforts in New York City,” said Health Department epidemiologists Vasudha Reddy and Katelynn Devinney, who are coauthors of the publication. “The incorporation of new data sources allows us to detect outbreaks that may not have been reported and for the earlier identification of outbreaks to prevent more New Yorkers from becoming sick.”

“I applaud DOHMH Commissioner Bassett for embracing the role that crowdsourcing technology can play in identifying outbreaks of foodborne illness. Public health must be forward-thinking in its approach to triaging both everyday and acute medical concerns,” said Brooklyn Borough President Eric Adams.

Most restaurant-associated outbreaks are identified through the Health Department’s complaint system, which includes 311, Yelp, and reports from health care providers. Since 2012, the Department has identified and investigated approximately 28,000 suspected complaints of foodborne illness overall. The Health Department reviews and investigates all complaints of suspected foodborne illness in New York City.

Missouri boy’s death linked to E. coli

The Columbia Daily Tribune is reporting a 2-year-old Howard County boy died yesterday as a result of E. coli poisoning.

The Boone County Medical Examiner’s Office confirmed this morning the victim was Coy Boley of the New Franklin area, and it also confirmed the boy’s death was linked to E. coli. An autopsy had not yet been conducted.

The boy died around 7 a.m. yesterday at Women’s and Children’s Hospital in Columbia.

The New Franklin Police Department said the boy’s home was not within city limits, and the Howard County Sheriff’s Department could not be reached for comment to confirm whether it is conducting a death investigation.

3 confirmed 2 probable E. coli in Columbia, Missouri

Three people in Boone County have confirmed cases of E. coli infection, and public health officials are awaiting results of lab tests on two other patients to confirm whether they also have the bacteria.

“We are doing thorough food-borne investigations as we always do,” said Geni Alexander, spokeswoman for the Columbia/Boone County Department of Public Health and Human Services. She said there was no evidence that a particular location or food was linked to the confirmed and “suspect” cases.

“All five sought medical care,” Alexander said. “Two of the five cases required hospitalization.”

Food safety on the road: Bite Me ’09 tour

Amy, Sorenne and I (right, not exactly as shown) started out this morning on our Spring Food Safety Speaking Tour – Bite Me ’09.

First stop is North Carolina State in Raleigh, but it’s 1,200 miles from an apparently snow-covered Manhattan (Kansas) and, with a three-month-old in tow, the stops are frequent.

One of those stops was at a Panera Bread in Columbia, Missouri. The restaurant rated an A according to the sign in the window (below, left) but when I went to the bathroom, the toilet handle was broken and wouldn’t flush. And I really should have flushed.