Serotipos de Salmonella identificados en los servicios de salud de México

Gutiérrez-Cogco, L; Montiel-Vázquez, Edith; Aguilera-Perez, Pablo; González-Andrade, María del Carmen

doi:10.1590/s0036-36342000000600004

Cited by 45 publications

(42 citation statements)

References 7 publications

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“…The number of recorded cases varies greatly from one year to the next among different states in the country. In 1994, a total of 100,342 infections were reported in Mexico (111.21 cases per 100,000 people), whereas nearly twice the number of cases were recorded in 1998 (215,155 cases; a rate of 223.53 per 100,000 people) (9). Similar values were obtained between 2003 and 2005, with the number of infections reaching 106,000 cases, an average rate of 102.7 cases per 100,000 people (5).…”

Section: Discussionmentioning

confidence: 99%

“…A similar pattern was also observed in the present investigation, with 20 serovars identified among the Salmonella isolates and a clear dominance of serovar Typhimurium among the strains recovered. Serovar Typhimurium is the most common serovar isolated from human sources in Mexico (9,32) and also predominates in animals and in meat products (32). The different seasonal relationship between human infections and Salmonella contamination observed in Bahia Todos los Santos may suggest a nonhuman origin for the Salmonella serovar Typhimurium contamination detected in coastal areas.…”

Section: Discussionmentioning

confidence: 99%

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Climate Patterns Governing the Presence and Permanence of Salmonellae in Coastal Areas of Bahia de Todos Santos, Mexico

Simental

Martínez-Urtaza

2008

Appl Environ Microbiol

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Despite the importance of salmonellae as one of the major causes of food-borne infections worldwide, data regarding the presence of these organisms in the environment are limited. We investigated the presence of Salmonella spp. in Bahia de Todos Santos (Baja California, Mexico) and evaluated the environmental factors that affect the occurrence of Salmonella spp. in this arid region. A total of 1,331 samples collected from 21 sites along the coast during a period of 3 years were analyzed for Salmonella spp. Geographical and seasonal distribution of Salmonella spp. was evaluated in association with environmental parameters and with human infections in the area. The incidence of Salmonella bacteria throughout the study was 4.8%, with the highest incidence detected in wastewater (16.2%), followed by stream water (10.6%), mollusks (7.4%), and seawater (2.3%). Twenty different serotypes were identified among the 64 Salmonella isolates. The dominant serotype was Typhimurium (23.4%), followed by Vejle (6.2%). The presence of Salmonella spp. in coastal areas was mostly confined to rainy periods and areas of stream discharges, and runoff was identified as the predominant factor influencing the transport of Salmonella bacteria from source points to the sea via streams. Isolation of Salmonella spp. was negatively and significantly associated with temperature, probably because of the effect of solar radiation in the decline of permanence of Salmonella bacteria. Conversely, human infections prevailed during the warmest months and were negatively correlated with the presence of Salmonella spp. in the marine environment.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Climate Patterns Governing the Presence and Permanence of Salmonellae in Coastal Areas of Bahia de Todos Santos, Mexico

Simental

Martínez-Urtaza

2008

Appl Environ Microbiol

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“…This serotype was the 12th most frequently found in human stool samples in Mexico among 199 serotypes reported by the country's health services between 1972 and 1999 [27]. A more recent study conducted between 2002 and 2005 covering four Mexican states including Michoacán, where the present study was conducted found that this serotype was fifth in frequency of isolation from patients with gastrointestinal symptoms, and sixth among asymptomatic children [28].…”

Section: Discussionmentioning

confidence: 43%

Investigation of a food-borne Salmonella Oranienburg outbreak in a Mexican prison

Vázquez-Garcidueñas

Romero-Pérez

Figueroa-Aguilar

et al. 2014

J Infect Dev Ctries

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Introduction: Gastroenteritis outbreaks in prisons represent a public health risk worldwide. Identifying and characterizing the etiological agents of gastroenteritis outbreaks in prisons is important for implementing effective prevention and infection control measures. We present the first studied case of a gastroenteritis outbreak in a Mexican prison. Methodology: Rectal swab samples were obtained from affected inmates. Standard microbiological techniques were used for isolating Salmonella enterica. Isolates were typed by PCR assays of DNA repetitive elements (ERIC, BOX, REP) and RAPD. Antibiotic resistance profiles were performed by the Kirby-Bauer method. Results: S. enterica serotype Oranienburg was responsible for the outbreak affecting 150 inmates. All patients presented diarrhea, and 70% of them also presented vomiting, with no fatal cases. The origin of the outbreak was undetermined due to the difficulty of gathering epidemiological information, but was likely the result of consumption of shrimp broth or a cantaloupe melon beverage. REP, BOX, and ERIC analyses of 26 serotype Oranienburg strains resulted in Simpson discrimination index (D) values of 0, 0.5507, and 0.5661, respectively. The D values from DG93-RAPD analyses and from the combined ERIC-BOX-DG93 markers were 0.7753 and 0.6092, respectively. All strains showed multiresistance to antibiotics. Conclusions: This is the only studied case of a gastroenteritis outbreak in a Mexican prison, and of the first such outbreak caused by serotype Oranienburg. The combined ERIC, BOX, and RAPD markers adequately assessed the genotype diversity of analyzed strains. Penitentiary personnel or inmates involved in outbreaks might spread multiresistant strains outside of the facility.

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“…In Mexico, there were 709,278 salmonellosis cases and 228,206 typhoid fever cases reported from (Secretaría de Salud, 2011. In addition, S. Gaminara and S. Montevideo have been associated with several cases of human illness in Mexico (Gutiérrez-Cogco et al, 2000). A certain proportion of salmonellosis and typhoid fever cases in Mexico may be associated with consumption of raw vegetables exposed to fecal contamination, probably due to the continued but limited practice of irrigating vegetable crops with untreated wastewater.…”

Section: Salmonella Outbreaksmentioning

confidence: 99%