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
Coulsdon and Purley 1948
[Report of the Medical Officer of Health for Coulsdon]
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Tests required by Milk (Special Designations) Regulations,
1936 to 1946, and the Heat-Treated Milk (Prescribed Tests)
Order, 1944.
BACTERIOLOGICAL.
| Designation and Number of Samples. | Methylene Blue. | Phosphatase. | Coliform Bacteria. | Turbidity. | |||||
|---|---|---|---|---|---|---|---|---|---|
| Satisfactory. | Unsatisfactory. | Satisfactory. | Unsatisfactory. | Satisfactory. | Unsatisfactory. | + | - | ||
| Pasteurised : | 43 | 42 | 1 | 43 | - | - | - | - | - |
| Heat Treated : | 54 | 51 | 3 | 52 | 2 | - | - | - | - |
| Raw : | 3 | 3 | - | - | - | 3 | - | - | - |
| Sterilised : | 4 | 1 | 3 | 4 | - | - | - | - | 4 |
| Tuberculin Tested : | 3 | 2 | 1 | - | 2 | 1 | - | - | |
| T.T. (Certified) : | 9 | 6 | 3 | - | - | 7 | 2 | - | - |
| Totals | 116 | 105 | 11 | 99 | 2 | 12 | 3 | - | 4 |
BIOLOGICAL.
| Designation. | Tubercle Bacillus. | ||
|---|---|---|---|
| + | - | ||
| Ungraded : | 18 | - | 18 |
| Tuberculin Tested: | 1 | - | 1 |
| T.T. (Certified) : | 3 | - | 3 |
| Totals : | 22 | - | 22 |
The percentages of samples of Pasteurised and Heat Treated milk
which were satisfactory for the Methylene Blue (keeping) test, and
Phosphatase (pasteurisation) test compared very favourably with those
for 1947, but the proportion of Tuberculin Tested and Tuberculin Tested
(Certified) samples which were unsatisfactory as judged by the keeping
and contamination tests was higher than it should have been. The
samples tested biologically for the presence of tubercle bacilli were all
satisfactory.
Milk (Special Designations) Regulations, 1936/46.
Licences to sell milk under the above Regulations were issued as
follows :—
Dealers :
Tuberculin Tested 6
Pasteurised 8
Supplementary :
Tuberculin Tested 7
Pasteurised 6
43