Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Enfield]
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TABLE 8
PREVALENCE AND CONTROL OF INFECTIOUS DISEASE Public Health Laboratory Service Clinical and Environmental Specimens
Type of Specimen | Number of Specimens Submitted | Findings | Number of Positives | * % of Positives | ||
---|---|---|---|---|---|---|
By Local Authority | By General Practitioners | Total | ||||
CLINICAL | ||||||
Nose and throat swabs | 18 | 467 | 485 | Group A haemolytic streptococci | 25 | 5.00 |
Faeces, general | 1,265 | 2,354 | 3,619 | Shigella sonnei | 390 | 10.70 |
Salmonella | 15 | 0.40 | ||||
Infantile gastro.enteritis coli | 1 | 0.02 | ||||
Giardiasis | 7 | 0.19 | ||||
Helminths | 2 | 0.05 | ||||
Faeces, occult blood | 3 | 429 | 432 | Blood | 101 | 23.00 |
Sputa, urines, genital, eye, ear, pus swabs and miscellaneous | 19 | 1,502 | 1,521 | |||
ENVIRONMENTAL | ||||||
Milk | 199 | — | 199 | Failed Methylene Blue Test | 14 | 7.00 |
Water | 62 | — | 62 | Faecal coli found | 3 | 4.80 |
Food | 103 | — | 103 | Pathogenic organisms found | Nil | Nil |
Ice-cream | 51 | — | 51 | Failed Methylene Blue Test | 10 | 2.00 |
* These figures indicate % positives of the total specimens sent including screening and follow-up. |