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Raw milk consumption among patients with non-outbreak-related enteric infections, Minnesota, USA, 2001-2010
Abstract:
Raw milk has frequently been identified as the source of foodborne illness outbreaks; however, the number of illnesses ascertained as part of documented outbreaks likely represents a small proportion of the actual number of illnesses associated with this food product. Analysis of routine surveillance data involving illnesses caused by enteric pathogens that were reportable in Minnesota during 2001-2010 revealed that 3.7% of patients with sporadic, domestically acquired enteric infections had reported raw milk consumption during their exposure period. Children were disproportionately affected, and 76% of those <5 years of age were served raw milk from their own or a relative's farm. Severe illness was noted, including hemolytic uremic syndrome among 21% of Escherichia coli O157-infected patients reporting raw milk consumption, and 1 death was reported. Raw milk consumers, potential consumers, and policy makers who might consider relaxing regulations regarding raw milk sales should be educated regarding illnesses associated with raw milk consumption.
Insights
Raw milk consumption is linked to sporadic enteric infections, especially in young children. Severe illnesses like hemolytic uremic syndrome and even death can occur, highlighting the risks of unpasteurized milk.
Area of Science:
- Food Safety
- Infectious Diseases
- Public Health
Background:
- Raw milk is frequently implicated in foodborne illness outbreaks.
- Documented outbreaks may underestimate the true burden of illness from raw milk.
- Routine surveillance data can reveal associations between food consumption and sporadic infections.
Observation:
- Analysis of Minnesota surveillance data (2001-2010) identified raw milk consumption in 3.7% of sporadic enteric infection cases.
- Children, particularly those under 5, were disproportionately affected, often consuming raw milk from family farms.
- Severe outcomes included hemolytic uremic syndrome (21% of E. coli O157 cases) and one reported death.
Findings:
- Raw milk consumption is a significant, often underestimated, source of sporadic enteric infections.
- Young children face a heightened risk, with many exposed through family connections.
- The consumption of raw milk is associated with severe health consequences, including life-threatening conditions.
Implications:
- Public health education is crucial for consumers, potential consumers, and policymakers regarding raw milk risks.
- Current regulations and consumer awareness may not adequately address the dangers of raw milk.
- Further research into the specific pathogens and transmission routes associated with raw milk is warranted.
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