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
Edmonton 1959
[Report of the Medical Officer of Health for Edmonton]
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SAMPLING OF MILK
Samples of milk taken for bacteriological examination at the Public Health Laboratory.
| Grade of Milk | Methylene Blue Test | Phosphatose Test | ||
|---|---|---|---|---|
| Passed | Failed | Passed | Failed | |
| Pasteurised | 6 | - | 9 | - |
| Tuberculin Tested (Pasteurised) | 1 | - | 1 | - |
| Total | 7 | - | 10 | - |
In the case of Pasteurised Milk the methylene blue test for
keeping quality was declared void on three occasions on account of the
high prevailing temperature.
SAMPLING OF ICE-CREAM
Samples of ice-cream and milk type lollies were taken for bacteriological examination at the Public Health Laboratory as follows:-
| Provisional Grades | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | ||
| Ice-Cream | 48 | 4 | 2 | 12 | 66 |
| Milk Type Lollies | 6 | 3 | - | - | 9 |
| Totals | 54 | 7 | 2 | 12 | 75 |
There were 12 void tests owing to high temperatures in the
Laboratory.
The results may be interpreted as follows:-
Grade 1 - Good.
“ 2 - Satisfactory.
“ 3 Poor.
“ 4 - Unsatisfactory.
The high proportion of Grade 4 samples of ice-cream was due to
a series of samples being taken from one dealer who froze an ice-cream mix
obtained from another dealer. The dealer subsequently agreed to obtain
supplies of manufactured ice-cream from an approved source.
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