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Salmonella Studies

Case Control, Cohort, and Other Studies

Case-control study of Salmonella Serogroups B and D, 1996

In 1996, FoodNet conducted a case-control study to identify risk factors for non-typhoidal Salmonella serogroup B or D infection. Reptile contact was associated with infection, and breast feeding protected against it. Eating chicken and undercooked eggs were associated with Salmonella serotype Enteritidis and Salmonella serotype Heidelberg infections. Antimicrobial use in the month before illness was associated with multi drug-resistant Salmonella serotype Typhimurium DT104 infection.

An electronic copy of the questionnaire and protocol is not currently available. Please use the contact information to the right to request a copy.

References:

Glynn MK, Reddy V, Hutwagner L, Rabatsky-Ehr T, Shiferaw B, Vugia DJ, Segler S, Bender J, Barrett TJ, Angulo FJ; Emerging Infections Program FoodNet Working Group. Prior antimicrobial agent use increases the risk of sporadic infections with multidrug-resistant Salmonella enterica serotype Typhimurium: a FoodNet case-control study, 1996–1997. Clin Infect Dis. 2004;38(Suppl 3):S227-236.

Hennessy TW, Cheng LR, Kassenborg H, Ahuja SD, Mohle-Boetani J, Marcus R, Shiferaw B, Angulo FJ. Group egg consumption is the principal risk factor for sporadic Salmonella serotype Heidelberg infections: a case-control study in FoodNet sites. Clin Infect Dis.2004; 38(Suppl 3):S237-243.

Kimura AC, Reddy V, Marcus R, Cieslak PR, Mohle-Boetani JC, Kassenborg HD, Segler SD, Hardnett FP, Barrett T, Swerdlow DL. Chicken consumption is a newly identified risk factor for sporadic Salmonella enterica serotype Enteritidis infections in the United States: a case-control study in FoodNet sites. Clin Infect Dis. 2004;38(Suppl 3):S244-252.

Mermin J, Hutwagner L, Vugia D, Shallow S, Daily P, Bender J, Koehler J, Marcus R, Angulo FJ. Reptiles, amphibians, and human Salmonella infection: a population-based, case-control study. Clin Infect Dis. 2004;38(Suppl 3):S253-261.

Rowe SY, Rocourt JR, Shiferaw B, Kassenborg HD, Segler SD, Marcus R, Daily PJ, Hardnett FP, Slutsker L. Breast-feeding decreases the risk of sporadic salmonellosis among infants in FoodNet sites. Clin Infect Dis.2004;38(Suppl 3):S262-270.

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Cohort study of Salmonella Typhi, 2002

In 2002, FoodNet conducted a retrospective cohort study to examine the impact on clinical outcome of reduced susceptibility to fluoroquinolones in Salmonella serotype Typhi infection. Results showed that patients infected with a strain with reduced susceptibility to fluoroquinolones had more prolonged fever and more frequent treatment failure.

An electronic copy of the questionnaire and protocol is not currently available. Please use the contact information to the right to request a copy.

Reference:

Crump JA, Kretsinger K, Gay K, Hoekstra RM, Vugia DJ, Hurd S, Segler SD, Megginson M, Luedeman LJ, Shiferaw B, Hanna SS, Joyce KW, Mintz ED, Angulo FJ; Emerging Infections Program FoodNet and NARMS Working Groups. Clinical response and outcome of infection with Salmonella enterica serotype Typhi with decreased susceptibility to fluoroquinolones: a United States FoodNet multi-center retrospective cohort study. Antimicrob Agents Chemother. 2008 Apr;52(4):1278-84.

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Case-control study of Salmonella serotypes Enteritidis and Newport, 2002

In 2002, FoodNet conducted a case-control study of Salmonella Enteritidis (SE) and Salmonella Newport infections. Among persons who had not recently traveled internationally, SE infections were associated with eating chicken prepared outside the home and undercooked eggs inside the home. SE infections were also associated with contact with birds and reptiles. Infection with Salmonella serotype Newport strains resistant to third generation cephaolosporin antimicrobial agents was associated with eating undercooked eggs and beef.

An electronic copy of the questionnaire and protocol is not currently available. Please use the contact information to the right to request a copy.

References:

Devasia RA, Varma JK, Whichard J, Gettner S, Cronquist AB, Hurd S, Segler S, Smith K, Hoefer D, Shiferaw B, Angulo FJ, Jones TF. Antimicrobial use and outcomes in patients with multidrug-resistant and pansusceptible Salmonella Newport infections, 2002-2003. Microbial Drug Resistance 2005;11(4):371-377.

Marcus R, Varma JK, Medus C, Boothe E, Anderson BJ, Crume TL, Fullerton KE, Moore MR, White PL, Lyszkowicz E, Voetsch AC, Angulo FJ, EIP FoodNet Working Group. Re-assessment of Risk Factors for Sporadic Salmonella Enteritidis Infections: A Case-Control Study in Five FoodNet Sites, 2002-2003. Epidemiol and Infect. 2007;135(1):84-92.

Varma JK, Marcus R, Stenzel SA, et al. Highly-resistant Salmonella Newport-MDRAmpC transmitted through the domestic U.S. food supply: A FoodNet case control study of sporadic Salmonella Newport infections, 2002–2003. Am J Infect Dis. 2006;194(2):222–230.

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Case-control Study of Salmonella in Infants, 2002

In 2002, FoodNet conducted a case-control study to identify risk factors for Salmonella infection in infants less than 2 months old. Risk factors identified included exposure to reptiles, attending daycare with a child with diarrhea, consuming meat, consuming reconstituted infant formula, and riding in a shopping cart next to meat or poultry. Breastfeeding was protective.

An electronic copy of the questionnaire and protocol is not currently available. Please use the contact information to the right to request a copy.

Reference:

Jones TF, Ingram A, Fullerton KE, et al. A case control study of Salmonella infection in infants, FoodNet, 2002–2004. Pediatrics. 2006;118(6):2380–2387.

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Cohort Study of Multi-Drug Resistant Salmonella, 2006

In 2006, FoodNet conducted a cohort study to investigate the impact of resistance to antimicrobial agents on clinical outcome of infection with non-Typhi Salmonella. Subject enrollment and data collection are complete; analyses are ongoing.

Case-control study of selected Salmonella Serotypes, 2007

In 2007, FoodNet conducted a case-control study to identify risk factors for Salmonella Javiana, Salmonella Infantis, and Salmonella I 4,[5],12:i:- infections. Data collection is complete; analyses are ongoing.

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