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 1933
[Report of the Medical Officer of Health for Croydon]
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87
Grade A (Tuberculin Tested) and Grade A Milks.
Licensed country producers of Grade A (Tuberculin
Tested) milk supplying milk to licensed local
dairymen 13
Licensed country producer of Grade A milk supplying
milk to a licensed local dairyman —
Pasteurised Milk.
Samples from licensed dealers 136
The following tables summarise the result of the bacteriological
examinations of Certified, Grade A (Tuberculin Tested),
Grade A and Pasteurised samples, from lst January to 31st
December, 1933:—
Table XXIII.
| CERTIFIED MILK. | Present. | Absent. | Over 30,000 per c.c. | Under 30,000 per c.c. | Present in 1/10 c.c. | Not present in 1/10 c.c. | Present. | Absent. | Present. | Absent. | Exceeding a trace. | Not exceeding a trace. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tubercle bacillus | ... | 7 | ||||||||||
| Total number of bacteria | ... | 7 | ||||||||||
| Bacillus Coli | ... | 7 | ||||||||||
| Blood | ... | 7 | ||||||||||
| Pus | ... | 7 | ||||||||||
| Detritus | ... | 7 | ||||||||||
| 7 | 7 | 7 | 7 | 7 | 7 |
The above 7 Certified Milk samples contained total bacteria
Per c.c. as follows:—
0—1,000 3
1,000—5,000 2
5,000—10,000 2
7
Under the Regulations Certified Milk must not contain more
than 30,000 bacteria per c.c.