scholarly journals An evaluation of strontium chloride, Rappaport and strontium selenite enrichment for the isolation of salmonellas from man, animals, meat products and abattoir effluents

1972 ◽  
Vol 70 (2) ◽  
pp. 367-384 ◽  
Author(s):  
J. B. Iveson ◽  
E. M. Mackay-Scollay
Keyword(s):  
Salmonella Typhimurium ◽  
Sea Water ◽  
Phage Type ◽  
Food Poisoning ◽  
Meat Products ◽  
Strontium Chloride ◽  
Enrichment Broth ◽  
Isolation Techniques ◽  
Wide Range

SUMMARYStrontium chloride enrichment broth was found to be comparable to Rappaport broth for the recovery of a wide range ofSalmonellaserotypes from man, animals, meat products and effluents. With the exception of cloacal samples from reptiles, both procedures were superior to selenite F.The performance of strontium chloride M and selenite F enrichment was improved when effluent samples were incubated at 43° C.Strontium chloride M and Rappaport enrichment were superior to selenite F for the isolation ofArizonaspecies from reptiles.Strontium chloride B, strontium selenite and Rappaport broths were found suitable for the isolation of multipleSalmonellaserotypes from sea water contaminated with abattoir effluents. The strontium chloride B and strontium selenite enrichment media were superior to Rappaport broth when samples were incubated at 43° C.Modified bismuth sulphite agar was found superior to Salmonella-Shigella agar as a solid subculture medium.The investigation of a food poisoning outbreak due toSalmonella typhimuriumphage type 21 is reported.The significance of the choice of sampling and isolation techniques in salmon-ellosis in man and animals is discussed.

scholarly journals Salmonella typhimuriumphage type 141 infections in Sheffield during 1984 and 1985: association with hens' eggs

1988 ◽  
Vol 101 (1) ◽  
pp. 75-82 ◽  
Author(s):  
P. A. Chapman ◽  
P. Rhodes ◽  
Wendy Rylands
Keyword(s):  
Salmonella Typhimurium ◽  
Phage Type ◽  
Food Poisoning ◽  
Causative Role ◽  
Sudden Increase ◽  
Laboratory Investigations

SUMMARYFood poisoning due toSalmonella typhimuriumphage type 141 was unusual inthe Sheffield area before 1984. The sudden increase in incidence of this phage type during 1984 and 1985, and its causative role in several small outbreaks in this period have been investigated. Epidemiological and laboratory investigations suggested that hens' eggs were the most likely source ofS. typhimuriumphage type 141.

Biofilm Formation by Multidrug-Resistant Salmonella enterica Serotype Typhimurium Phage Type DT104 and Other Pathogens

2007 ◽  
Vol 70 (1) ◽  
pp. 22-29 ◽  
Author(s):  
SHIN-HEE KIM ◽  
CHENG-I WEI
Keyword(s):  
Stainless Steel ◽  
Salmonella Typhimurium ◽  
Salmonella Enterica ◽  
Bacterial Species ◽  
Phage Type ◽  
Meat Products ◽  
Multidrug Resistant ◽  
E Coli ◽  
Retail Meat ◽  
Glass Surfaces

The biofilm-forming capability of Salmonella enterica serotypes Typhimurium and Heidelberg, Pseudomonas aeruginosa, Listeria monocytogenes, Escherichia coli O157:H7, Klebsiella pneumoniae, and Acinetobacter baumannii isolated from humans, animal farms, and retail meat products was evaluated by using a microplate assay. The tested bacterial species showed interstrain variation in their capabilities to form biofilms. Strong biofilm-forming strains of S. enterica serotypes, E. coli O157: H7, P. aeruginosa, K. pneumoniae, and A. baumannii were resistant to at least four of the tested antibiotics. To understand their potential in forming biofilms in food-processing environments, the strong biofilm formers grown in beef, turkey, and lettuce broths were further investigated on stainless steel and glass surfaces. Among the tested strains, Salmonella Typhimurium phage type DT104 (Salmonella Typhimurium DT104) isolated from retail beef formed the strongest biofilm on stainless steel and glass in beef and turkey broths. K. pneumoniae, L. monocytogenes, and P. aeruginosa were also able to form strong biofilms on the tested surface materials. Salmonella Typhimurium DT104 developed a biofilm on stainless steel in beef and turkey broths through (i) initial attachment to the surface, (ii) formation of microcolonies, and (iii) biofilm maturation. These findings indicated that Salmonella Typhimurium DT104 along with other bacterial pathogens could be a source of cross-contamination during handling and processing of food.

scholarly journals The virulence of salmonella strains for chickens: their excretion by infected chickens

1980 ◽  
Vol 84 (3) ◽  
pp. 479-488 ◽  
Author(s):  
H. Williams Smith ◽  
J. F. Tucker
Keyword(s):  
Salmonella Typhimurium ◽  
Alimentary Tract ◽  
Phage Type ◽  
Food Poisoning ◽  
The Other ◽  
Intramuscular Route ◽  
Fatal Infection ◽  
Phage Types ◽  
Oral Inoculation

SUMMARYInoculated orally, 16 Salmonella typhimurium strains belonging to 12 phage types varied greatly in their abilityto kill 1-day-old chickens; variation was noted even between strains of the same phage type. Fourteen strains belonging to 11 food poisoning serotypes other than S. typhimurium were practically non-lethal whenexamined in this manner. All of them were lethal by the intramuscular route but some were more so than others. Twowere more lethal by this route than one of the S. typhimurium strains that was highly lethal when given orally.With age, chickens rapidly became resistant to fatal infection with the food poisoning strains; given orally, a S.typhimurium strain killed 79 % of 1-day-old chickens but only 3 % of 2-day-old chickens. Of 2 specific poultrypathogenic strains, one, of S. gallinarum, was lethal by oral inoculation to chickens of all ages but the other, of S. pullorum, was only lethal to very young ones.Some salmonella strains, such as those of S. infantis and S. menston, were more efficient at infecting and colonizing the alimentary tract of chickens than were the more virulent S. typhimurium strains, the S. gallinarum and S. pullorum strains and a S. cholerae-suis strain.

Incidence of Salmonellae in Lymph Nodes, Spleens and Feces of Sheep and Goats Slaughtered in the Riyadh Public Abattoir

1982 ◽  
Vol 45 (14) ◽  
pp. 1314-1317 ◽  
Author(s):  
NASSIM H. NABBUT ◽  
HABEEB M. AL-NAKHLI
Keyword(s):  
Lymph Nodes ◽  
Salmonella Typhimurium ◽  
Food Poisoning ◽  
Meat Products ◽  
Red Meat ◽  
Mesenteric Lymph Nodes ◽  
Sheep And Goats ◽  
Mesenteric Lymph ◽  
Common Serotypes ◽  
Edible Parts

During the period July, 1980 to June, 1981, 618 samples consisting of mesenteric lymph nodes, spleens and feces, collected from 307 sheep and goats slaughtered in the Riyadh Public Abattoir, were examined for salmonellae. Salmonellae were recovered from 14.7% of 307 lymph nodes, 4.7% of 192 feces and from 0.8% of 119 spleens. Among the 23 serotypes recovered, the most common was Salmonella typhimurium followed by S. newport, S. havana, S. bovismorbificans, S. reading, S. braenderup, S. eastbourne, and S. poona. Other less common serotypes were also encountered. Lymph nodes and feces from slaughtered animals may be a source for contamination of the red meat and other edible parts of the carcase with salmonellae. Consumption of contaminated meat or meat products either raw or undercooked may cause Salmonella food poisoning in man.

scholarly journals Strontium chloride and strontium selenite enrichment broth media in the isolation ofSalmonella

1969 ◽  
Vol 67 (3) ◽  
pp. 457-464 ◽  
Author(s):  
J. B. Iveson ◽  
E. M. Mackay-Scollay
Keyword(s):  
Public Health ◽  
Hong Kong ◽  
New Media ◽  
Enrichment Culture ◽  
Strontium Chloride ◽  
Enrichment Broth ◽  
Human Faeces ◽  
Wide Range ◽  
Animal Material ◽  
Comparative Trials

Two new media, strontium chloride and strontium selenite broths, are described for the enrichment culture ofSalmonellafrom human and animal material.In comparative trials, strontium chloride was found to be comparable to Rappaport medium for the recovery of a wide range ofSalmonellaserotypes from human faeces and sewage, and from pig faeces and glands. Both were superior to selenite F medium.Strontium selenite was found to be superior to selenite F in the recovery ofS. typhifrom human faeces and sewage.We are greatly indebted to Mr M. H. Lello for preparing the samples of strontium selenite used in the investigation and for allowing us to publish the notes on his method of preparing the substance.Our thanks are due to Pro. C. T. Huang of Hong Kong for sending samples of faeces from typhoid cases under his care; and to Dr Joan Taylor for her continuing help in confirming or identifying the serotypes of salmonella isolated.We thank Dr W. S. Davidson, Commissioner of Public Health, Western Australia, for permission to publish.

scholarly journals Microbiological indexes of mutton at monieziosis

2018 ◽  
Vol 20 (92) ◽  
pp. 105-108
Author(s):  
O. T. Piven ◽  
M. S. Khimich ◽  
K. V. Teshko ◽  
V. O. Khodunova ◽  
O. M. Gorobey
Keyword(s):  
Raw Materials ◽  
Food Poisoning ◽  
Meat Products ◽  
Experimental Period ◽  
Control Group ◽  
Allowable Level ◽  
Wide Range ◽  
Microbiological Parameters ◽  
Experimental Group

Today, one of the most objective indicators of safety and quality are microbiological. Although it is practically impossible to completely avoid meat contamination and a wide range of factors may affect the microbial contamination of meat, despite this, microbiological risk analysis is the most effective system for assessing and controlling the safety of meat and meat products, in particular lamb. Therefore, the purpose of our study was to determine the microbiological parameters of lamb obtained from animals affected by monitors, in particular during peak infestations in the southern region. We investigated 125 lamb’s carcasses killed in Berezovsky and Saratsky districts of the Odessa region within 3 months. 35 carcasses from that quantity were infected by monieziosis. This amounts 28%. Percentage of moniezia disease  was 20% in May, in June and July respectively 39.1% and 22.7%. The results of study showed that the defeat of lambs at the age of 4−6 month by moniezia leads to decrease of quality of mutton. The microbiological indexes indicate it. Study of common bacterial contamination established that the QMAFAnM in samples of experimental group didn’t exceed the allowable level in May and June. So, in May allocated 3.01 ± 0.28×103* CFU per 1 g (Р ≤ 0.05). This is true toward control. The quantity of Colonies Forming Units per 1 g increased in June and was 3.13 ± 0.23×105 (Р ≤ 0.05). The increase is related to gradual height of the inflammatory process, intoxication, allergization of lamb’s organism that caused by moniezia. The QMAFAnM exceed the allowable level in July and was 5.22 ± 0.11×106 CFU per 1 g (Р ≤ 0.05). This indicates a questionable quality of meat. That raw materials can’t be used by consumers on general grounds. It can cause outbreaks of food poisoning. The QMAFAnM during experimental period didn’t exceed the allowable level and was within the 1.81 ± 0.34−4.31 ± 0.12×102 CFU per 1 g in carcasses from non-invasive by moniezia (control group) animals. Collibacillus bacterias have indentified during all experimental period in samples from invasion by moniezia animals. At the same time collibacillus bacterias in samples from non-invasion animals were found only in June and July. Average content of colibacillus baсterias was within the 1.68 ± 0.12−4.65 ± 0.26×102 (Р ≤ 0.05) CFU per 1 g for experimental group. The index didn’t exceed the allowable level but it was higher than indexes in control group. Salmonella contamination was not detected in any groups of samples.

The epidemic spread of Salmonella typhimurium phage type 10 in Canada (1970–1979)

1983 ◽  
Vol 29 (11) ◽  
pp. 1583-1588 ◽  
Author(s):  
R. Khakhria ◽  
G. Bezanson ◽  
D. Duck ◽  
H. Lior
Keyword(s):  
Salmonella Typhimurium ◽  
Phage Type ◽  
Food Poisoning ◽  
Epidemic Spread ◽  
Animal Host ◽  
Resistance Determinants ◽  
Poultry Products ◽  
R Plasmids ◽  
Resistant Strains ◽  
Human Infections

The frequency of Salmonella typhimurium phage type 10 across Canada was monitored during the period 1970–1979. Phage type 10 isolations increased from 1.2% in 1970 to 68.8% in 1979 among isolates from human sources and from 1.5 to 30.6% in isolates from nonhuman sources. Examination of food-poisoning outbreaks and a study of the animal–host associations of phage type 10 revealed that contaminated poultry products appear to be the most common sources of human infections. The majority (89.3%) of S. typhimurium phage type 10 strains were sensitive to antibiotics. Of the resistant strains, 73.3% were resistant to single antibiotics and 26.7% were multiresistant. Thirty-three different patterns of antibiotic resistance were observed. A number of the resistance determinants were transferable by conjugation and the R plasmids were found to belong to the incompatibility groups HI1, FII, N, Iα, and C.

scholarly journals An outbreak of human infection due to Salmonella typhi-murium, phage type 4, associated with the use of unpasteurized liquid egg

1963 ◽  
Vol 61 (3) ◽  
pp. 323-330 ◽  
Author(s):  
A. J. Essex-Cater ◽  
D. M. Jones ◽  
F. Swindell
Keyword(s):  
Salmonella Typhimurium ◽  
Phage Type ◽  
Food Poisoning ◽  
Salmonella Typhi ◽  
Human Infection ◽  
Salmonella Infection ◽  
Source Of Infection ◽  
Small Producer ◽  
The City ◽  
Frequent Presence

During 1962, twenty-seven food poisoning incidents due to Salmonella typhimurium, phage type 4, comprising thirty-two cases and twelve symptomless excreters, occurred in the south-east Lancashire conurbation. The source of infection was a single small producer of English liquid egg. Pasteurization of the product coincided with the end of the outbreak. The cases were sporadic in distribution. Investigation of previous incidents due to this phage type in the City of Manchester pointed to egg from the same producer. As a result an investigation was made into the amount and source of unpasteurized egg in use in the city. This revealed the frequent presence of salmonella infection and demonstrated the need for pasteurization of liquid egg before use.

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