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
Croydon 1937
[Report of the Medical Officer of Health for Croydon]
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235
The above 7 Tuberculin Tested milk samples contained total
bacteria per m.l. as follows:—
1,000—6,000 5
5,000—10,000 2
7
Under the Regulations Tuberculin Tested Milk shall satisfy
a methylene blue reduction test and contain no coliform bacillus
in one hundredth of a millilitre.
Table XIY.
| ACCREDITED MILK (Licences granted, under the Milk (Special Designations) Order, 1936). | Present. | Absent. | Present in 1/100 m.l. | Absent. | Present. | Absent. | Present. | Absent. | Exceeding a trace. | Not exceeding a trace. | Satisfied. | Not satisfied. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | †2 | 17 | ||||||||||
| Bacillus Coll | 2 | 11 | ||||||||||
| Blood | ... | 13 | ||||||||||
| Pus | 13 | |||||||||||
| Detritus | 13 | |||||||||||
| Methylene Blue Test | 12 | 1 | ||||||||||
| 2 | *17 | 2 | 11 | ... | 13 | ... | 13 | ... | 13 | 12 | 1 |
*This figure includes 6 samples examined for presence of tubercle bacilli
only.
†Two samples from a local Accredited Producer's farm proved to be tuberculous.
Systematic sampling of the herd followed with negative results.
A cow, however, died in the interim period from an unknown cause.