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

Greenwich 1952

[Report of the Medical Officer of Health for Greenwich Borough]

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61
Following experiments by the Ministry of Agriculture and
Fisheries, "Warfarin," the bait containing the anti-coagulant
chemical hydroxycoumarin, has been used wherever practicable and
excellent results have been obtained. The fact that this preparation
can be used in very low concentrations makes it an admirable allpurpose
bait and relatively safe when employed in the proximity
of humans and domestic animals.

Table: Baiting of Sewers.—The Borough Engineer has kindly supplied me with the undermentioned information of the treatments carried out in the Council's sewers in connection with the scheme:—

Baiting of Sewers.—The Borough Engineer has kindly supplied me with the undermentioned information of the treatments carried out in the Council's sewers in connection with the scheme:—

DetailsDate of Treatment
1st to 19th Dec., 195226th May to 16th June, 1952
1. No. of Manholes in foul and connected systems1,1651,165
2. Bait base and poison usedSausage rusk and zinc phosphide
3. No. of Manholes baited1,1651,165
4. No. of Manholes showing prebait takes707698
5. No. of Manholes showing complete prebait take (on one or both days)423350
6. Schemes of baiting used (e.g.; consecutive days or 1st, 3rd and 5th days)Consecutive daysConsecutive days
7. No. of Manholes test-baited in conjunction with this treatment and not included in No. 3 aboveNilNil
Remark: With regard to these treatments, the whole of the manholes were treated in the normal way — therefore no test-baiting was undertaken.

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It may be mentioned that the neighbouring Boroughs of Woolwich
and Lewisham took action at the same time as Greenwich.
Anti-Fly and Anti-Mosquito Campaign.—During the
summer period, April to September, the campaign was continued
on similar lines to those of previous years, 4 men with the use of 2
motor-cycles and sidecars being employed in this important
preventive aspect of the Department's work.
The major factors to be controlled include house refuse, static
water sites, ponds, ditches, cafes and food shops generally.
Once more the treatment of house refuse was successfully
accomplished by arrangement with the Borough Engineer whereby