An outbreak of food poisoning caused by <i>Salmonella typhi-murium</i>, phage-type 12, probably spread by infected meat

Harvey, R. W. S.; Price, T. H.; Bate, W.; Allen, Denise Roth

doi:10.1017/s0022172400021033

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…In 1959, however, this type was found both in cattle and in man and since then has become the dominant type in human infections. In South Wales, comparison of the phage-types of 8. typhi-murium isolated from local animals and from local infections in man has been routine practice since 1958 (Harvey & Phillips, 1961;Harvey et al 1963). From 1958 to 1961, phage-types l a var.…”

Section: Discussionmentioning

confidence: 99%

Salmonellae in cattle and their feedingstuffs, and the relation to human infection

1965

J. Hyg.

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1. The incidence of salmonellosis in cattle in England and Wales has been investigated.2. S. dublin and S. typhi-murium were much the commonest serotypes encountered.3. The frequency of both serotypes was highest in the last quarter of the year, which is the period of maximum calvings. The high incidence of calf infection in this quarter is probably related to calf sales and movement.4. In the previous investigations (Reports, 1959a, 1961), these serotypes were isolated only infrequently from the raw materials of animal feedingstuffs and from complete animal foods.5. The distribution of phage-types of S. typhi-murium in cattle was compared with that in man and in animal feedingstuffs. Six phage-types were common both in cattle and in man. These types were: 1a (2), 1 var. 5 (U9), 1a var. 1 (3an), 1 (1), 1a (U57) and 2 (12). Three of the types found in feedingstuffs were common in both human and bovine infections. These types were: 1a (2), 1a (U57)and 2 (12).6. In a study of ten incidents of salmonellosis in cattle, it was shown that the same phage-type or serotype was commonly found in man in other farm animals and occasionally in feedingstuffs.7. It is clear that salmonellosis is spread into different regions of the country by calf movement.8. The importance is endorsed of conditions of travel and lairage, and of the holding time at abattoirs, in the promotion of cross-infection with salmonellae.9. Measures are outlined for the reduction of salmonellosis in cattle and of its transfer to man.

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Section: Discussionmentioning

confidence: 99%

Salmonellae in cattle and their feedingstuffs, and the relation to human infection

1965

J. Hyg.

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“…The swab technique has been employed routinely for monitoring salmonellosis in our area since 1955 (Harvey & Phillips, 1955;Harvey, 1957;Harvey & Phillips, 1961;Harvey, Price, Bate & Allen, 1963;Harvey, Price & Dixon, 1966). It has been applied to bakehouses, abattoirs, knackers yards, retail meat markets and wholesale and retail butchers.…”

Section: Methodsmentioning

confidence: 99%

Salmonellas in sewage. A study in latent human infection

Harvey¹,

Price²,

Foster³

et al. 1969

J. Hyg.

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SUMMARYIn a residential estate of 4000 persons, containing neither industry nor retail butchers shops, salmonellas were regularly found in the sewerage system. They were frequently found in the sewage of a portion of the estate housing 1000 persons. The range of serotypes found was wide and some types suggested an exotic origin. No overt salmonella infection in the estate was reported during the period of survey, although local general practitioners had been previously alerted. Overt infection due to serotypes found in the survey were, however, reported in other areas of Glamorgan. Multiple sampling points in the sewerage system and a serological technique for examining samples contaminated with multiple salmonella serotypes were essential for the technical success of the survey.We should like to thank Prof. Scott Thomson for his advice in the preparation of this paper; Dr E. S. Anderson of the Central Enteric Reference Laboratory and Bureau, Colindale, for phage-typing the strains of S. typhimurium and S. paratyphi B; and Dr G. J. G. King of the Public Health Laboratory, Bournemouth, for identifying the serotypes isolated. We should also like to thank Mr T. R. Liddington and Mr J. H. Price for their technical assistance.

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“…An epidemic caused by what is termed an exotic serotype has an exotic source. The finding of an outbreak serotype in a butcher's shop environment is surely evidence of mode of spread (Harvey et al 1963). The clustering of human infections round a series of shops shown to have the relevant serotype on the premises indicates advisability of hygiene checks in the area.…”

Section: Investigation Of Salmonellosismentioning

confidence: 99%

“…Gauze swabs also proved of value in demonstrating the presence of S. typhimurium, type 12, in the environment of 15 out of 54 shops during an outbreak of salmonella food poisoning in Cardiff in 1960. Human infections in the city tended to be clustered round shops from which S. typhimurium, type 12, was isolated (Harvey, Price, Bate & Allen, 1963).…”

Section: Introductionmentioning

confidence: 99%

Sewer and drain swabbing as a means of investigating salmonellosis

Harvey

Price

1970

Epidemiol. Infect.

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SUMMARYThe use of gauze swabs in drains or sewers to clarify the path followed by a salmonella from source to human host has been reviewed in the light of experience gained in Cardiff over 15 years. This period has seen a marked change in attitudes to salmonella epidemiology in that infected food is now regarded as of greater importance than infected food handlers. In these 15 years, butchers, abattoirs and knackers' yards, markets and bakehouses have been monitored. In the bakehouse survey the existence of staff infection was demonstrated by sewage examination. Sewage investigation has also been used to show frequent entry of salmonellas into households in a residential estate. The estate was carefully chosen to exclude salmonellas from industrial sources and shops. The frequent finding of infection in this sewage implies that a commonly consumed heavily infected food item is involved. The wide range of serotypes isolated suggests an animal usually fed on infected animal feed. Poultry and pigs are put forward as animals liable to spread salmonellosis to man.It is hoped that clarification of the salmonella pathway may eventually lead to measures likely to prevent the transmission of infection to man. It is also suggested that swabs placed in abattoir drains serve as an economical method of obtaining warning of a persistent build-up of contamination. The persistence of a serotype in an abattoir is not infrequently followed by human infection.

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An outbreak of food poisoning caused by Salmonella typhi-murium, phage-type 12, probably spread by infected meat

Cited by 7 publications

References 10 publications

Salmonellae in cattle and their feedingstuffs, and the relation to human infection

Salmonellae in cattle and their feedingstuffs, and the relation to human infection

Salmonellas in sewage. A study in latent human infection

Sewer and drain swabbing as a means of investigating salmonellosis

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