| a multistate outbreak of escherichia coli o157:h7 infection linked to consumption of beef tacos at a fast-food restaurant chain. | we investigated a multistate outbreak of escherichia coli o157:h7 infections. isolates from 13 case patients from california, nevada, and arizona were matched by pulsed-field gel electrophoresis subtyping. five case patients (38%) were hospitalized, and 3 (23%) developed hemolytic uremic syndrome; none died. the median age was 12 years (range, 2-75 years), and 10 (77%) were female. case-control studies found an association between illness and eating beef tacos at a national mexican-style fast-fo ... | 2004 | 15206044 |
| outbreaks of escherichia coli o157:h7 associated with petting zoos--north carolina, florida, and arizona, 2004 and 2005. | during 2004-2005, three outbreaks of escherichia coli o157:h7 infections occurred among agricultural fair, festival, and petting zoo visitors in north carolina, florida, and arizona. one hundred eight cases, including 15 cases of hemolytic uremic syndrome (hus), were reported in the north carolina outbreak; 63 cases, including seven hus cases, were reported in the florida outbreak; and two cases were reported in arizona. no fatalities occurred. illnesses primarily affected children who visited p ... | 2005 | 16371942 |
| persistence of escherichia coli o157 and non-o157 strains in agricultural soils. | shiga toxin producing escherichia coli o157 and non-o157 serogroups are known to cause serious diseases in human. however, research on the persistence of e. coli non-o157 serogroups in preharvest environment is limited. in the current study, we compared the survival behavior of e. coli o157 to that of non-o157 e. coli strains in agricultural soils collected from three major fresh produce growing areas of california (ca) and arizona (az). results showed that the nonpathogenic e. coli o157:h7 4554 ... | 2014 | 24907617 |
| topological data analysis of escherichia coli o157:h7 and non-o157 survival in soils. | shiga toxin-producing e. coli o157:h7 and non-o157 have been implicated in many foodborne illnesses caused by the consumption of contaminated fresh produce. however, data on their persistence in soils are limited due to the complexity in datasets generated from different environmental variables and bacterial taxa. there is a continuing need to distinguish the various environmental variables and different bacterial groups to understand the relationships among these factors and the pathogen surviv ... | 2014 | 25250242 |
| influence of bacterial communities based on 454-pyrosequencing on the survival of escherichia coli o157:h7 in soils. | shiga toxin-producing escherichia coli o157:h7 has been implicated in many foodborne illnesses. in this study, survival of e. coli o157:h7 in 32 soils from california (ca) and arizona (az) was investigated. our goal was to correlate the survival time of e. coli o157:h7 in soils with 16s rrna pyrosequencing based bacterial community composition. kohonen self-organizing map of survival and associated soil chemical, physical and biological variables using artificial neural network analysis showed t ... | 2013 | 23360569 |
| persistence of escherichia coli o157:h7 in major leafy green producing soils. | persistence of escherichia coli o157:h7 in 32 (16 organically managed and 16 conventionally managed) soils from california (ca) and arizona (az) was investigated. results showed that the longest survival (ttd, time needed to reach detection limit, 100 cfu g(-1) dry soil) of e. coli o157:h7 was observed in the soils from salinas valley, ca and in organically managed soils from az. detrended correspondence analysis revealed that the survival profiles in organically managed soils in yuma, az were d ... | 2012 | 23030401 |