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
Walthamstow 1933
[Report of the Medical Officer of Health for Walthamstow]
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In addition, 4 samples of cream were analysed and the results are given below:—
BACTERIOLOGICAL ANALYSIS OF CREAM SAMPLES
| Date. | Total Bacteria. per c.c. | Bacillus Coli absent in | Presence of Tubercle. Bacillus (biological test). | Remarks. |
|---|---|---|---|---|
| 16.10.33 | 41,000 | 0.01 c.c. | No test | High standard of bacterial purity. |
| „ | 720,000 | 0.01 c.c. | „ | Good standard of bacterial purity. |
| „ | 74,000 | 1 c.c. | „ | Very high standard of bacterial purity. |
| „ but kept and sent to Lab. 19.10.33 | 8,000,000 approx. | 0.00001 c.c. | „ | Was probably a good cream and results are due to multiplication of bacteria owing to keeping. (N.B. Retained for comparative purposes. ) |
Eleven samples of Ice Cream were taken for analysis, the results being given below:—
BACTERIOLOGICAL ANALYSIS OF ICE CREAM SAMPLES.
| Date. | Total Bacteria per c.c. | Bacillus Coli absent in | Remarks. |
|---|---|---|---|
| 19.7.33 | 1,300,000 | 0.00001 c.c. | Unsatisfactory product. |
| 90,000 | 0.0001 c.c. | Total bacterial count not excessive but coli count not up to standard. | |
| 72,000 | 0.01 c.c. | Satisfactory bacterial purity — clean product. | |
| 4,400 | 1 c.c. | Counts very low—highest standard of bacterial purity. | |
| 2.8.33 | 132,000 | 0.01 c.c. | Not of high standard but passably satisfactory. |
| 2,100,000 | 1 c.c. | Excessive number of bacteria but coli satisfactory. Result suggests dirty vessels on exposure to air or dust. | |
| 21,000 | 0.1 c.c. | Satisfactory bacterial purity. | |
| 36,000 | 0.1 c.c. | ||
| 9,200 | 1 c.c. | ||
| 21,400 | 1 c.c. | ||
| 25.8.33 | 960,000 | 1 c.c. | Total bacterial count high but coli satisfactory. Result suggests sample unpasteurised |