Ocorrência simultânea de Staphylococcus aureus enterotoxigênicos nas mãos, boca e fezes em portadores assintomáticos

Andrade, Gildete Patriota de; Zelante, F

doi:10.1590/s0034-89101989000400002

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…These clearly indicated that milk handlers and milk buckets could be the potential sources of contamination of milk with S. aureus . The isolation rate from milker’s hand was relatively in agreement with the prevalence rate reported by Deandrade and Zelante [31] and Tondo et al [32] whose results were 35.7% and 35.2%, respectively. This may be attributed to the fact that staphylococci are ubiquitous organisms and at least 50% of individuals carry the organism in their nasal passages, throat and through coughing or sneezing.…”

Section: Discussionsupporting

confidence: 91%

Assessment of Staphylococcus aureus along milk value chain and its public health importance in Sebeta, central Oromia, Ethiopia

et al. 2017

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Background Staphylococcus aureus is one of the leading causes of gastroenteritis acquired from contaminated foods such as milk and milk products. However, such information is limited in Ethiopia. A cross-sectional study was conducted to assess the contamination of milk with S. aureus and knowledge, attitudes and practices (KAP) of actors along the milk value chain in Sebeta, Central Oromia, Ethiopia. A total of 291 samples collected from dairy farms, milk collection centers (MCCs) and processing plant were examined using standard microbiological techniques. The antimicrobial susceptibility profiles of the isolates were also investigated. The KAP of actors in milk value chain were evaluated through a structured questionnaire.ResultsOverall, 23.4% (n = 68) of the samples were positive for S. aureus. The prevalence of S. aureus was 19.6% (95% CI: 14.5–25.6) and 80.0% (95% CI: 14.5–25.6) at farm level and MCCs, respectively. Higher isolation rate was observed in the MCCs (p = 0.000) than the farms. The contamination rates of hands of milkers’ and milking buckets with S. aureus were 32% and 11.1%, respectively. S. aureus was not isolated from pasteurized milk samples. The isolates were found to be resistant to cefoxitin (100%), penicillin G (98.5%), and streptomycin (77.9%). Among 23 interviewed farmers, 35% of them consumed raw milk, none of them wash their hands and 82.6% did not wash udder and teat before milking. Six percent of consumers had the habit of raw milk consumption. Eighty seven percent of dairy farmers and 54% of consumers had no awareness about milk borne diseases and staphylococcal food poisoning.ConclusionsThe study revealed a high prevalence of S. aureus along the milk value chain, poor milk handling practices, raw milk consumption behavior, lack of awareness about milk borne diseases and occurrence of antimicrobials resistant S. aureus. S. aureus seems to pose a public health risk in Sebeta. Authors recommended the urgent need of public awareness creation about the importance of hygienic milk production and proper handling and adequate heat treatment of milk before consumption and further study to assess cost-effective preventive and control options.

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Section: Discussionsupporting

confidence: 91%

Assessment of Staphylococcus aureus along milk value chain and its public health importance in Sebeta, central Oromia, Ethiopia

et al. 2017

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“…Staphylococcus aureus can also be found as a component of the resident microflora on hands and in the nose, but it is also a major etiologic agent of skin infections and can easily contaminate foods manipulated by infected or colonized caterers [7]. Several other studies have reported prevalence rates of S. aureus colonization similar to the one herein reported (9.9%) [8][9][10].…”

Section: Discussionsupporting

confidence: 55%

Bacterial contamination in milk kitchens in pediatric hospitals in Salvador, Brazil

Cairo¹,

Silva²,

Andrade³

et al. 2008

Braz J Infect Dis

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Milk may represent an important source of infectious agents to hospitalized pediatric patients. To describe the bacterial microflora isolated from the hands, stools, pharynx of all workers at milk kitchens in pediatric hospitals in the city of Salvador, Brazil, as well as in the formulas prepared by them, we carried out this cross-sectional study with all 91 workers from the 20 milk kitchens of all the public and private hospitals in Salvador, Brazil. Hand and pharynx swabs and stool samples were collected from all workers, as well as samples of the milk and formulas delivered by the kitchens. All samples were cultured for the detection of pathogenic and non-pathogenic bacteria. Pathogenic bacteria were isolated from 20 (22.0%) and 8 (8.8%) cultures of the hands and pharynx of the workers, respectively. No pathogenic bacteria were isolated from stool samples. Pathogenic bacteria were isolated from 17 (18.7%) milk samples. The prevalence of pathogenic bacteria in hand swabs was significantly higher in workers from public (37.8%) than from private (6.5%) hospitals (prevalence ratio [PR]=5.8; p<0.01). Pathogenic bacteria were isolated from two (4.4%) workers from public hospitals and six (13.0%) workers from private hospitals (PR=0.38; p=0.27). Pathogenic bacteria were isolated from 11 (24.4%) milk samples from public hospitals and 6 (13.0%) from private hospitals (PR=1.9; p=0.16). A high prevalence of contamination was found, mainly on the hands of workers on units for manipulation of milk. Preventive efforts should be intensified and focus primarily on effective hand washing and continuous work supervision.

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“…Several studies have demonstrated considerable variation on the S. aureus frequency isolated from the nose of individuals, both in hospitals and dental offices. 1,13,20,32 A high frequency of S. aureus colonies was detected from the operator's hands, mainly with gloves, before the dental appointment. The contamination of the gloves may be occurring either from the transfer of microorganisms from the students' hands or by contact with contaminated surfaces.…”

Section: Discussionmentioning

confidence: 99%

Staphylococcus Aureus Contamination in a Pediatric Dental Clinic

Negrini

Duque

Oliveira

et al. 2009

Journal of Clinical Pediatric Dentistry

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Staphylococcus aureus strains can be disseminated during dental treatment and occasionally lead to contamination and infection of patients and dentists. The objective of this study was to determine the frequency and compare the number of S.aureus colonies isolated from the nose, hands and tongue of students and patients, as well as from the clinical environment, before and after dental treatment. Staphylococcus species were isolated from the tongue, nose and hands of 30 students and 30 patients and from the environment of a Pediatric Dentistry Clinic. The samples were incubated in SMA plates at 37o C for 48 hours. Results: The colonies that showed the presence of mannitol fermentation were collected as identification for Staphylococcus aureus, using CHROMagar and the coagulase test. The highest amount of S.aureus was found in the nose and tongue of children. In relation to dental students, more contamination was observed on gloved hands, followed by the tongue and hands without gloves, before clinical attendance. At the end of dental treatment, S. aureus colonies isolated from the gloved hands of students decreased significantly. Considering the clinical environment, the most contaminated areas were the auxiliary table and the storeroom, which was located at the center of the clinic. Conclusion: The dental clinic can be considered an environment for S. aureus cross-transmission. Preventative measures should be used to avoid the dissemination of pathogenic microorganisms.

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Ocorrência simultânea de Staphylococcus aureus enterotoxigênicos nas mãos, boca e fezes em portadores assintomáticos

Cited by 9 publications

References 21 publications

Assessment of Staphylococcus aureus along milk value chain and its public health importance in Sebeta, central Oromia, Ethiopia

Assessment of Staphylococcus aureus along milk value chain and its public health importance in Sebeta, central Oromia, Ethiopia

Bacterial contamination in milk kitchens in pediatric hospitals in Salvador, Brazil

Staphylococcus Aureus Contamination in a Pediatric Dental Clinic

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