Complex Outbreak Response

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Presentation transcript:

Complex Outbreak Response Epi-Ready Complex Outbreak Response Module 8

Module Objectives By the end of this module, participants will be able to recognize a multijurisdictional or complex outbreak response and identify the appropriate methods of response. Recognize when a response is complex and requires a change in routine response activities Describe the characteristics of a multijurisdictional outbreak response Based on the outbreak response characteristics, identify additional resources necessary to meet the demands of the response

Local Outbreak Response Detection by local healthcare providers or complaint system Response by local public health department or food regulatory agency Associated with local “event” or retail food establishment Usually caused by food-handling error(s)

Complex Outbreaks Multijurisdictional outbreaks Large number of cases Illness severity Novel pathogens and food vehicles Intentional contamination

Additional Resources in a Complex Outbreak Core-discipline personnel Non-conventional personnel Investigational capacity not available within the jurisdiction

Multijurisdictional Response Coordinated response Cases detected by laboratory Investigation capacity needed Often associated with commercially-distributed foods

Multistate Outbreak Response Facilitated by advanced molecular detection Molecular subtyping with PFGE and the establishment of PulseNet in the 1990s Can associate small numbers of ill cases in distant locations E. coli O157:H7 Infections Linked to Eating Raw Refrigerated, Prepackaged Cookie Dough (2009) Salmonella Typhimurium Infections Linked to Dried Coconut (2018) Salmonella Mbandaka Infections Linked to Kellogg’s Honey Smacks Cereal (2018) Source: CDC

Significance of Multistate Outbreaks Make up only 3% percent of all foodborne outbreaks of known etiology reported Have a significant public health impact Make up 12% of illness 42% of hospitalizations 50% of deaths Source: Surveillance for Foodborne Disease Outbreaks in the United States, 2015 Annual Report (CDC)

Leading Pathogens of Multistate Outbreaks 58% caused by Salmonella spp. 28% caused by Shiga toxin-producing E. coli 10% caused by Listeria monocytogenes ** Product tracing investigations led to product recall in 63% of multistate investigations conducted between 2010 - 2014. Source: CDC FDOSS

Listeria Outbreak – Blue Bell Ice Cream Associated illness lasted almost 5 years 10 identified cases 4 states 3 deaths

Listeria Outbreak - Sequence of Events Feb 2015 South Carolina Department of Health and Environmental Control isolate Listeria from Blue Bell single service ice cream products. Texas Department of State Health Services identifies Listeria from the same two products.

Listeria Outbreak - Sequence of Events March 2015 Kansas Department of Health and Environment identify four cases from the same hospital infected with Listeria with indistinguishable PFGE patterns. The PFGE patterns were indistinguishable from the Listeria isolated from ice cream in South Carolina and Texas. Investigation of the hospitalized patients strongly suggest that the Listeria infections were acquired in the hospital. All four cases consumed milkshakes made with Blue Bell ice cream.

Listeria Outbreak - Sequence of Events March 13 2015 Blue Bell removes implicated product made on the production line and closes their Texas facilities.

Listeria Outbreak - Sequence of Events March 22 2015 Kansas Department of Health and Environment isolated the outbreak strain of Listeria from an unopened, single-service container of ice cream. Sample of the same product from the company’s Oklahoma facility yielded Listeria that was indistinguishable from each other but different from other sampling conducted previously. The next day, Blue Bell issued a recall of single-service ice cream cups manufactured at the Oklahoma facility.

Listeria Outbreak - Sequence of Events April 3 2015 CDC identifies six people from Arizona (1), Oklahoma (1), and Texas (4) with Listeria infection with indistinguishable isolates compared to the sample taken from the Oklahoma facility. Information from one of the cases in Texas reported they consumed ice cream in the hospital prior to developing listeriosis. CDC issues an advisory that consumers not eat any products made at the Oklahoma facility. Blue Bell reported that they had voluntarily suspended operations at their facility in Oklahoma.

Listeria Outbreak - Sequence of Events April 5, 2015 CDC reported that whole genome sequencing (WGS) confirmed that three of the four isolates from the people in Texas were nearly identical to the Listeria strains isolated from the ice cream from the Oklahoma facility. The fourth isolate was later determined not to be part of the outbreak by WGS.

Listeria Outbreak - Sequence of Events April 20 2015 Blue Bell voluntarily recalled all products made at all three of their facilities. Recall was announced after sampling by the company revealed that Chocolate Chip Cookie Dough Ice Cream half gallons produced on March 17, 2015, and March 27, 2015, contained Listeria.

Listeria Outbreak - Sequence of Events May 2015 FDA releases findings from recent inspections at all three Blue Bell facilities. “Failure to manufacture and package foods under conditions and controls necessary to minimize the potential for growth of microorganisms and contamination.” “Failure to clean food-contact surfaces as frequently as necessary to protect against contamination of food.” “The plant is not constructed in such a manner as to prevent drip and condensate from contaminating food, food-contact surfaces, and food- packaging materials.”

Listeria Outbreak - Epilogue The Oklahoma and Alabama facilities were reopened in July and September 2015, respectively The corporate headquarters facility in Texas reopened approximately one year after closure. Lay off of 1,450 of 3,900 workers Furloughed 1,400 workers Kept afloat by $125 million loan “This was a complex multistate outbreak investigation of listeriosis” - CDC

Very Large Foodborne Outbreaks Generally require additional core discipline staff Often “event” related May need to coordinate response with other jurisdictions Norovirus outbreak in Las Vegas sickened 1252 employees and guests at the Flamingo Las Vegas -Clark County Press Release

Outbreaks Associated with Severe Outcomes Illness associated with high morbidity and mortality Requires crisis and risk communication methods May require subject matter experts E. coli O104:H4 outbreak associated with sprouted fenugreek seeds from Egypt

Novel Pathogens and Food Vehicles Identified by advanced molecular laboratory detection methods May require subject matter expertise not available in local jurisdictions Leads to a better understanding of pathogens Chia Seed Powder Wheat Flour Moringa Leaf Powder

Intentional Contamination Shigella dysenteriae type 2 infection caused by a laboratory worker, 1997 Arsenic contaminated coffee served at a Lutheran Church in New Sweden Maine, 2003 Nicotine contaminated meat in Michigan, 2003 Mouse poison and hand sanitizer in Michigan, 2016 New Partner!

Horizontal Scaling Adding members from the same level of government May involve recruiting staff from within the agency or from another agency operating at the same level of government

Vertical Scaling Adding response team members from state and federal agencies. Add members to provide additional support of current activities Add subject matter expertise lacking at local level Epi-Aid FERN LRN

Activity In the participant’s manual, read and discuss the scenarios presented. Based upon your jurisdiction, state whether the scenario presented is a complex outbreak and why. Provide the response team partners that would be necessary for a successful response. Record responses in the space provided in the manual. Work in table groups 10 minutes in groups 10 minutes to report

Summary Recognize when a response is complex and exceeds normal operating conditions Describe the characteristics of a multijurisdictional outbreak response Identify additional resources necessary to meet the demands of the response

Effective Team Response – Strategies and Tactics Coming Up Next Effective Team Response – Strategies and Tactics