London's Pulse: Medical Officer of Health reports 1848-1972

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Enfield 1966

[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 — Findings

Type of SpecimenNumber of Specimens SubmittedFindingsNumber of Positives*%of Positives
by Local Authorityby General PractitionersTotal
CLINICAL
Nose and throat swabs459771,022Group A haemolytic streptococci696.0
(Approx. 45% from new cases)
Faeces, general6112,2842,895Sonnei dysentery1465.0
(Approx. 35 % from new cases)Salmonellosis742.5
Infantile gastro-enteritis coli230.8
Giardiasis291.0
Helminths50.2
Faeces, occult blood372372Blood287.5
Kahn tests11234146Gonorrhoea0.0
ENVIRONMENTAL
Milk268268Failed Methylene Blue Test10.4
Water† 4141Faecal coli found24.9
Food5252Pathogenic organisms found0.0
Ice-cream2828Failed Methylene Blue Test27.1
* These figures indicate % positives of the total specimens sent including screening and follow-up. † Includes 29 samples taken from swimming baths.