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1.
Epidemiol Infect ; 146(1): 1-10, 2018 01.
Article in English | MEDLINE | ID: mdl-29237513

ABSTRACT

The Foodborne Diseases Active Surveillance Network (FoodNet) conducts population-based surveillance for Campylobacter infection. For 2010 through 2015, we compared patients with Campylobacter jejuni with patients with infections caused by other Campylobacter species. Campylobacter coli patients were more often >40 years of age (OR = 1·4), Asian (OR = 2·3), or Black (OR = 1·7), and more likely to live in an urban area (OR = 1·2), report international travel (OR = 1·5), and have infection in autumn or winter (OR = 1·2). Campylobacter upsaliensis patients were more likely female (OR = 1·6), Hispanic (OR = 1·6), have a blood isolate (OR = 2·8), and have an infection in autumn or winter (OR = 1·7). Campylobacter lari patients were more likely to be >40 years of age (OR = 2·9) and have an infection in autumn or winter (OR = 1·7). Campylobacter fetus patients were more likely male (OR = 3·1), hospitalized (OR = 3·5), and have a blood isolate (OR = 44·1). International travel was associated with antimicrobial-resistant C. jejuni (OR = 12·5) and C. coli (OR = 12) infections. Species-level data are useful in understanding epidemiology, sources, and resistance of infections.


Subject(s)
Campylobacter Infections/epidemiology , Foodborne Diseases/epidemiology , Adult , Aged , Campylobacter Infections/etiology , Centers for Disease Control and Prevention, U.S. , Female , Foodborne Diseases/etiology , Humans , Male , Middle Aged , Time Factors , Travel , United States/epidemiology
2.
Epidemiol Infect ; 145(14): 2991-2997, 2017 10.
Article in English | MEDLINE | ID: mdl-28803563

ABSTRACT

Salmonella causes an estimated 1·2 million illnesses annually in the USA. Salmonella enterica serotype Javiana (serotype Javiana) is the fourth most common serotype isolated from humans, with the majority of illnesses occurring in southeastern states. The percentage of wetland cover by wetland type and the average incidence rates of serotype Javiana infection in selected counties of the Foodborne Disease Active Surveillance Network (FoodNet) were examined. This analysis explored the relationship between wetland environments and incidence in order to assess whether regional differences in environmental habitats may be associated with observed variations in incidence. Findings suggest that environmental habitats may support reservoirs or contribute to the persistence of serotype Javiana, and may frequently contribute to the transmission of infection compared with other Salmonella serotypes.


Subject(s)
Salmonella Infections/epidemiology , Salmonella enterica/physiology , Wetlands , Humans , Incidence , Salmonella Infections/microbiology , Salmonella enterica/genetics , Serogroup , United States/epidemiology
3.
Epidemiol Infect ; 142(5): 1050-60, 2014 May.
Article in English | MEDLINE | ID: mdl-23916064

ABSTRACT

We investigated an outbreak of 396 Salmonella enterica serotype I 4,5,12:i:- infections to determine the source. After 7 weeks of extensive hypothesis-generation interviews, no refined hypothesis was formed. Nevertheless, a case-control study was initiated. Subsequently, an iterative hypothesis-generation approach used by a single interviewing team identified brand A not-ready-to-eat frozen pot pies as a likely vehicle. The case-control study, modified to assess this new hypothesis, along with product testing indicated that the turkey variety of pot pies was responsible. Review of product labels identified inconsistent language regarding preparation, and the cooking instructions included undefined microwave wattage categories. Surveys found that most patients did not follow the product's cooking instructions and did not know their oven's wattage. The manufacturer voluntarily recalled pot pies and improved the product's cooking instructions. This investigation highlights the value of careful hypothesis-generation and the risks posed by frozen not-ready-to-eat microwavable foods.


Subject(s)
Cooking , Disease Outbreaks , Food Labeling , Salmonella Food Poisoning/epidemiology , Salmonella enterica , Adolescent , Adult , Aged , Aged, 80 and over , Case-Control Studies , Child , Child, Preschool , Data Collection , Female , Food Safety , Frozen Foods , Humans , Infant , Male , Middle Aged , Public Health/methods , United States/epidemiology , Young Adult
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