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
Wanstead and Woodford 1948
[Report of the Medical Officer of Health for Wanstead and Woodford]
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The activities of the department during the year were extended in the sampling of ice-cream. Sixty-four samples were obtained compared with
| Number | Local or outside manufacture | No. of colonies per ml. on Agar at 37deg. C. in 48 hrs. | Coliform test. Positive in 1/100 ml. in 3 tubes | Bact. coli. Present in 1/100 ml. in 3 tubes | Remarks by Public Health Laboratories | METHYLENE BLUE REACTION | ||
|---|---|---|---|---|---|---|---|---|
| After preincubation decolourised in (hours) | After preincubation not decolourised in (hours) | Ministry's Provisiona Grading | ||||||
| 1 | Outside | 180,000 | 3 in 3 tubes | 0 in 3 tubes | Barely passable standard of bacterial purity, | 0 | — | IV. |
| 2 | Outside | 51,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3 | — | II. |
| 3 | Outside | 19,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 0 | — | IV. |
| 4 | Outside | 85,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | ½ | — | III. |
| 5 | Outside | 18,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 4 | — | II. |
| 6 | Local | 48,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | 4½ | I. |
| 7 | Local | 380 | 0 in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | 4½ | I. | |
| 8 | Outside | 12,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3½ | — | II. |
| 9 | Local | 25,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 4½ | I. | |
| 10 | Outside | 1,200 | 0 in 3 tubes | 0 in 3 tubes | Very satisfactory standard of bacterial purity. | 4½ | I. | |
| 11 | Outside | 4,500 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3 | — | II. |
| 12 | Outside | 150,000 | 3 in 3 tubes | 0 in 3 tubes | Passable standard of bacterial purity. | 0 | — | IV. |
| Outside | 40,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | 4½ | I. | |
| 14 | Outside | 3,000 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | 1½ | — | III. |
| Local | 250,000 | 3 in 3 tubes | 0 in 3 tubes | Sample contains excessive numbers of bacteria, most of which are of thermoduric type, suggesting more careful cleansing of the plant is required. | ½ | III. | ||
| 16 | Outside | 20,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | III. | |
| 17 | Outside | 30,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | II. | |
| 18 | Outside | 60,000 | 3 in 3 tubes | 0 in 3 tubes | Fairly satisfactory standard of bacterial purity. | — | IV. | |
| 19 | Local | 900 | ) in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | — | 4½ | I. |
| 20 | Outside | 3,000 | 3 in 3 tubes | 0 in 3 tubes | Very satisfactory standard of bacterial purity. | 4 | — | II. |
| 21 | Outside | 35,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3 | — | II. |
| 22 | Outside | 900 | 3 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | 4½ | I. | |
| 23 | Outside | 15,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | II. | |
| 24 | Outside | 4,000 | 3 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | II. | |
| 25 | Local | 120,000 | 3 in 3 tubes | 0 in 3 tubes | Passable standard of bacterial purity. | 1 | — | III. |
| 26 | Outside | 52,000 | 3 in 3 tubes | 3 in 3 tubes | Contains organisms of excremental origin and is therfore unsatisfactory. | 0 | — | IV. |
| 27 | Local | 2,400 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | 4 | — | II |
| 28 | Outside | 32,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 4½ | I. | |
| 29 | Outside | 1,200 | 0 in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | — | I. | |
| 30 | Outside | 500 | 0 in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | 4 | — | II. |
| 31 | Outside | 5,200 | 1 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 2 | — | III. |
| 32 | Local | 12,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | II. | |
| 33 | Outside | 48,000 | 3 in 3 tubes | 0 in 3 tubes | Fairly satisfactory standard of bacterial purity. | — | II. | |
| 34 | Outside | 18,000 | 3 in 3 tubes | 0 in 3 tubes | Fairly satisfactory standard of bacterial purity. | 2 | — | III. |
| 35 | Outside | 4,000 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | — | II. | |
| 36 | Local | 250,000 | 3 in 3 tubes | 0 in 3 tubes | Contains excessive numbers of bacteria and is therefore unsatisfactory. | — | IV. | |
| 37 | Outside | 60,000 | 3 in 3 tubes | 0 in 3 tubes | Passable standard of bacterial purity. | ½ | — | III. |
| 38 | Outside | 8,000 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | — | I. | |
| 39 | Outside | 3,000 | 2 in 3 tubes | 0 in 3 tubes | Satisfactory standard, of bacterial purity. | — | I. | |
| 40 | Outside | 180,000 | 3 in 3 tubes | 1 in 3 tubes | Barely passable standard of bacteria! purity. | 1½ | — | III. |
| 41 | Outside | 10,000 | 3 in 3 tubes | 0 in 3 tubes | Fairly satisfactory standard of bacterial purity. | 2 | — | III. |
| 42 | Outside | 90,000 | 3 in 3 tubes | 0 in 3 tubes | Passable standard of bacterial purity. | 1½ | — | III. |
| 43 | Outside | 1,500 | 0 in 3 tubes | 0 in 3 tubes | Very satisfactory standard of bacterial purity. | 4½ | I. | |
| 44 | Outside | 800 | 0 in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | I. | ||
| 45 | Outside | 150,000 | 3 in 3 tubes | 1 in 3 tubes | Barely passable standard of bacterial purity, organisms of excremental origin being present in small numbers. | 0 | IV. | |
| 46 | Local | 1,400 | 0 in 3 tubes | 0 in 3 tubes | Very satisfactory standard of bacterial purity. | — | 4½ | I |
| 47 | Local | 2,100 | 0 in 3 tubes | 0 in 3 tubes | Very satisfactory standard of bacterial purity. | — | 4½ | I |
| 48 | Outside | 3,000 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | — | I. | |
| 49 | Outside | 23,000 | 3 in 3 tubes | 0 in 3 tubes | Fair standard—content of coliform organisms should be lower. | 3 | II. | |
| 50 | Outside | 400 | 0 in 3 tubes | 0 in 3 tubes | Excellent standard of bacterial purity. | — | I. | |
| 51 | Outside | 16,000 | 2 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3 | II. | |
| 52 | Outside | 32,000 | 3 in 3 tubes | 0 in 3 tubes | Fair standard of bacterial purity, but the coliform organisms should be lower in number. | 1½ | — | III. |
| 53 | Local | 480 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | — | I | |
| 54 | Outside | 7,800 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3 | — | I. |
| 55 | Outside | 5,200 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 4 | — | II. |
| 56 | Outside | 370,000 | 3 in 3 tubes | 0 in 3 tubes | Unsatisfactory —contains excessive numbers of bacteria. | 0 | — | IV. |
| 57 | Outside | 9,300 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | 3½ | — | II. |
| 58 | Outside | 120,000 | 3 in 3 tubes | 0 in 3 tubes | Passable standard of bacterial purity. | 0 | — | IV. |
| 59 | Outside | 5,200 | 0 in 3 tubes | 0 in 3 tubes | Satisfactory standard of bacterial purity. | —• | 4½ | I. |
| 60 | Outside | 3,800 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | - | 4½ | I. |
| 61 | Outside | 4,800 | 0 in 3 tubes | 0 in 3 tubes | High standard of bacterial purity. | - | 4½ | I. |
| 62 | Outside | 12,000 | 3 in 3 tubes | 0 in 3 tubes | Fair standard of bacterial purity, but content of coliform should be lower. | 3 | — | II. |
| 63 | Outside | 25,000 | 3 in 3 tubes | 0 in 3 tubes | Fair standard of bacterial purity, but content of coliform should be lower. | 3 | II. | |
| 64 | Outside | 90,000 | 0 in 3 tubes | 0 in 3 tubes | Fair standard of bacterial purity. | 3 | — | II. |