The Changing Epidemiology of Salmonella: Trends in Serotypes Isolated from Humans in the United States, 1987–1997

Salmonellosis is a major cause of illness in the United States. To highlight recent trends, data for 1987–1997 from the National Salmonella Surveillance System were analyzed. A total of 441,863 Salmonella isolates were reported, with the highest age-specific rate among infants (159/100,000 infants a...

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Bibliographic Details
Published in:The Journal of infectious diseases 2001-03, Vol.183 (5), p.753-761
Main Authors: Olsen, Sonja J., Bishop, Richard, Brenner, Frances W., Roels, Thierry H., Bean, Nancy, Tauxe, Robert V., Slutsker, Laurence
Format: Article
Language:English
Subjects:
Adolescent
Adult
Age Factors
Aged
Aged, 80 and over
Animals
Bacteriology
Biological and medical sciences
Child
Child, Preschool
Disease Outbreaks
Epidemiology
Female
Fundamental and applied biological sciences. Psychology
Human viral diseases
Humans
Incidence
Infant
Infections
Infectious diseases
Major Articles
Male
Medical sciences
Microbiology
Middle Aged
Preventive medicine
Public health
Reptiles - microbiology
Salmonella
Salmonella - classification
Salmonella - isolation & purification
Salmonella enteritidis
Salmonella Food Poisoning - epidemiology
Salmonella Food Poisoning - microbiology
Salmonella infections
Salmonella Infections - epidemiology
Salmonella Infections - microbiology
Salmonella Infections - prevention & control
Salmonella typhimurium
Seasons
Serotyping
Sex Factors
Surveillance
United States - epidemiology
Viral diseases
Viral diseases of the lymphoid tissue and the blood. Aids
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Summary:Salmonellosis is a major cause of illness in the United States. To highlight recent trends, data for 1987–1997 from the National Salmonella Surveillance System were analyzed. A total of 441,863 Salmonella isolates were reported, with the highest age-specific rate among infants (159/100,000 infants at 2 months). Annual isolation rates decreased from 19 to 13/100,000 persons; however, trends varied by serotype. The isolation rate of Salmonella serotype Enteritidis increased until 1996, whereas declines were noted in Salmonella serotypes Hadar and Heidelberg. Overall, serotypes that increased in frequency were significantly more likely than those that decreased to be associated with reptiles (P=.008). Salmonella infections continue to be an important cause of illness, especially among infants. Recent declines in food-associated serotypes may reflect changes in the meat, poultry, and egg industries that preceded or anticipated the 1996 implementation of pathogen-reduction programs. Additional educational efforts are needed to control the emergence of reptile-associated salmonellosis
ISSN:0022-1899
1537-6613
DOI:10.1086/318832