Cyclospora in Canada: PHAC and CFIA investigate

According to the Public Health Agency of Canada, over 80 Canadians are ill with Cyclospora and the source isn’t known. It’s also not clear whether these illnesses are linked to the 350+ cases of Cyclospora in Texas and elsewhere.

Related, or maybe not, who can tell, cilantro produced in Puebla, Mexico was banned from the U.S. a couple of weeks ago – after hundreds of Cyclospora illnesses going back to 2012.230px-Cyclospora_cayetanensis

The Public Health Agency of Canada is collaborating with provincial public health partners, the Canadian Food Inspection Agency, and Health Canada to investigate 83 Canadian cases of Cyclospora infections in Ontario, British Columbia, Alberta, and Quebec. The source of this outbreak is not yet known, and the Agency and its partners continue to investigate.

In Canada, a total of 83 cases have been reported in British Columbia (3), Alberta (1), Ontario (74), and Quebec (5). Two cases have been hospitalized, and are recovered or recovering. No deaths have been reported. Individuals became sick between May 9 and July 18, 2015. To date, no source has been identified. The investigation is ongoing.

The Public Health Agency of Canada is leading the human health investigation of this outbreak and is in regular contact with its federal and provincial partners to monitor and take collaborative steps to address the outbreak. Health Canada provides food-related health risk assessments to determine if the presence of a certain substance or microorganism poses a health risk to consumers. The Canadian Food Inspection Agency (CFIA) conducts food safety investigations into the possible food source of an outbreak. The Government of Canada will continue to update Canadians as new information related to this investigation becomes available.

So many questions – are the Canadians coordinating with U.S. officials who are investigating american Cyclospora illnesses? Are Canadians still getting cilantro from Puebla, Mexico? This is a weird statement at the bottom of the press release:

To date, no multi-jurisdictional outbreaks have been linked to produce grown in Canada.

Maybe something is lost in translation: 4-year-old’s death a misadventure

Kids dying from foodborne illness hits me like a punch in the gut. After following illnesses and outbreaks for 15 years I still take pause to think about my kids when I see a tragic story involving children.

Outbreaks rarely end with the classic smoking gun resolution (a genetically matched strain in the food/environment and stool). Epidemiology, in the absence of pathogen matches, is king and uncertainty is reduced with reliable data and statistics. Once a possible food/site match is made, investigators go out to the field and check the food handling out.broken-telephone

A conscientious investigator can talk about possible risk factors in a report – but the subsequent reporting and broken telephone game of sharing the information can bleed potential factors into must-have-happened fact.

A few years ago an environmental health officer shared her concerns about how the story gets changed between the field and the report interpretation. She had investigated a outbreak blamed on poor handwashing shared with me that her notes showed no soap at the time she was in the kitchen a week after the illnesses were reported – that was translated into poor handwashing by the staff at the time of the outbreak.

She felt that was an extrapolation wrought with assumptions.

Folks who used the example didn’t care.

Getting the risk factor story right really matters.

According to the Straits Times a four-year-old boy in Singapore tragically died from salmonellosis and court proceedings point to food handling practices a shopping center food court stall. Based on the coverage, I’m not sure it’s that simple. And I wouldn’t call it a misadventure.

Shayne Sujith Balasubraamaniam, together with his mother and two-year-old sister, came down with food poisoning on Jan 19 this year, a day after his mother had bought food, including tahu goreng and curry chicken, from a nasi padang stall at Kopitiam food court at Northpoint Shopping Centre.

All three were taken brought to Bukit Batok Polyclinic the next day. Shayne was assessed to be severely dehydrated and was prescribed medication.

He showed apparent signs of recovery, but deteriorated on Jan 22 when his mother found him unconscious at home. He died in hospital about two hours later from salmonella septicaemia.

On Thursday, State Coroner Marvin Bay said in his findings that the boy’s death underscores that careless food handling and inattention to proper hygienic practices can result in catastrophic consequences on young and vulnerable persons. He found the boy’s death to be one of misadventure.

The most significant lapse, the inquiry heard, was the practice of partial cooking and refreezing of chicken parts. The kitchen would receive 80 parts of chicken as a batch. After washing the batch, 60 chicken parts were refrozen for use the next day. They would be stored with plastic bags with other raw food at the freezer, a practice which would encourage cross-infection between the raw and partially cooked food. Swabs from the tongs used to handle food, and the blender found a high concentration of bacteria that exceeded safety limits.

While the post-outbreak investigation demonstrates serious issues with food handling at the business, I’m not sure what was presented is enough to link the salmonellosis. If the stored chicken was partially cooked it implies that it would be further cooked – which if temperatures exceeded 165F would result in a 5-log reduction of Salmonella. Maybe cross contamination between raw and sorta raw chicken is really a factor – especially if there weren’t other illnesses. Or maybe the washing step spread pathogens around the kitchen.

South Carolina health officials investigating two outbreaks of salmonelloisis

In 2009 when I had a Campylobacter infection it took me a few days of puking and diarrhea to go to my doctor. Then it took a week for the lab results. And then it took another week for the county folks to follow up with me about a food history.

Our conversation revolved around food that I had consumed a month prior (within the window of exposure).Unknown-14

Outbreak investigations can be messy.

According to the Island Packet (in South Carolina), the S.C. Department of Health and Environmental Control is investigating a couple of clusters of salmonellosis that appear not to be linked.

State health officials have yet to determine if eight Beaufort County salmonella poisoning cases in the past three weeks stem from a common source. Neither have any new cases been reported to the S.C. Department of Health and Environmental Control since the agency first confirmed last week a team is investigating a possible outbreak, DHEC spokeswoman Cassandra Harris said Friday.

However, the longer an investigation takes, the less likely the team will pin down a common source, she added.

“While efforts are made to identify the cause of salmonella clusters, the success of those efforts often depends on the cooperation of those involved and their recollection of what they ate,” Harris said. “As time passes, we are less likely to be able to identify a potential source for the illnesses.”

Harris also dispelled rumors that many more people in the county might be sick.

“At this time, there are no other indications of an unexpected increase in illnesses in the community” apart from the reported cases, Harris said (although CDC estimates that there are 38 related Salmonella illnesses for ever confirmed case due to underreporting -ben).

DHEC is also helping the U.S. Centers for Disease Control and Prevention investigate a separate, single case of salmonella poisoning that matches a national cluster of salmonella, Harris said.

However, DHEC and CDC investigators have not identified a common source of infections within that national cluster, according Laura Burnworth, a spokeswoman for the CDC’s Division of Foodborne, Waterborne and Environmental Diseases.

Food inspection vs. investigation

Allen Mozek, M.P.H., Supervising Food Inspector, New York State Department of Agriculture & Markets, writes in this contribution to barfblog.com that,

I find that food inspectors in all regulatory agencies have a tendency to confuse their inspection techniques with their investigative techniques. This results in lost evidence (primarily food samples) to prove the cause of a foodborne illness.

A little background…

The spirit of public health and food inspection is education and prevention. Food inspectors are allowed access without a warrant because they are looking for compliance, whereas police officers are denied access without a warrant because they are looking for evidence. This difference in emphasis on compliance versus evidence gathering reflects a difference in approaches. Evidence is gathered during routine inspection, but a food inspector’s initial expectations are compliance (or so says public health law).

Unfortunately, the daily emphasis on education and prevention creeps into investigations of foodborne disease. I say "creep" because I suggest that the habit of educating prevents inspectors from finding the evidence necessary to solve cases.

Once a case is reported, an inspector should be gathering evidence and
no longer educating at the expense of "showing your hand" or otherwise
reveal too much information. I think it’s about changing gears from an
inspection mentality to an investigation mentality — the two are very
different.
 

Guidelines for foodborne disease outbreak response

Proving there is a Council for everything, the Council to Improve Foodborne Outbreak Response released its Guidelines for Foodborne Disease Outbreak Response today.

The guidelines in this document are targeted to local, state and federal agencies and provide model practices used in foodborne disease outbreaks, including planning, detection, investigation, control and prevention. Local and state agencies vary in their approach to, experience with, and capacity to respond to foodborne disease outbreaks. The guidelines are intended to give all agencies a common foundation from which to work and to provide examples of the key activities that should occur during the response to outbreaks of foodborne disease. The guidelines were developed by a broad range of contributors from local, state and federal agencies with expertise in epidemiology, environmental health, laboratory science and communications. The document has gone through a public review and comment process.

The Guidelines document is not intended to replace current procedure manuals for responding to outbreaks. Instead, it is designed to be used as a reference document for comparison with existing procedures; to fill in gaps and update site-specific procedures; to provide models for new procedures where they do not exist; and to provide training to program staff. The document is available in electronic and hard-copy formats for state and local health departments.