London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Bromley 1965
[Report of the Medical Officer of Health for Bromley]
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95
BACTERIOLOGICAL SAMPLES OF MILK
88 samples of designated milks were taken with the following results:—
| Satisfied | Failed | |
|---|---|---|
| Phosphatase Test | 59 | Nil |
| Methylene Blue Test | 71 | 5 |
| Turbidity Test | 2 | Nil |
| Ring Test | 5 | 1 |
The tests were applied for the following purposes:—
Phosphatase Test applied to "Pasteurised Milk" to
determine that the milk was satisfactorily pasteurised.
Methylene Blue Test applied to "Untreated" and
"Pasteurised" milks to indicate that the bacterial
content was within the prescribed standard.
Turbidity Test applied to "Sterilised Milk" to determine
that the milk was satisfactorily sterilised.
Ring Test applied to untreated milk to determine the
presence of "Brucellus abortus".
Where samples failed to satisfy the prescribed tests, investigations
were made and further samples taken, the results of which
proved satisfactory.
Bacteriological Samples of Ice Cream
45 samples were taken during the year with the following
results:—
Grade I 20
Grade II 10
Grade III 12
Grade IV 3
Further samples were obtained from the suppliers whose
products had given Grades III and IV samples. The results
were classified in Grades I and II.
SUNDRY BACTERIOLOGICAL EXAMINATIONS
| 1 Specimen Chinese Egg Noodle containing 25% fresh egg | Nil | pathogenic | organisms | isolated |
| 3 Specimens Liquid Pasteurised Egg | Nil | pathogenic | organisms | isolated |
| 1 Specimen "Pink Elephants" Beverage coolers | Nil | pathogenic | organisms | isolated |
| 236 Specimens of Faeces were taken from persons suspected to be suffering from infectious disease or food poisoning, or to be contacts of persons suffering from infectious disease. | Salmonella Typhi murium organisms isolated | 30 | ||
| Shigella Sonne organisms isolated | 32 | |||