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

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Holborn 1953

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

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31
During 1953, 331 complaints of rat or mice infestation were received and investigated.

The following table shows the work carried out during the year arising from the complaints received, and in connection with 13 blocks which were surveyed.

Complaint.Block Survey.Total.
Business premises inspected314215529
Dwelling houses inspected219210429
Local authority premises inspected8—8
Business premises treated1476153
Dwelling houses treated1551156
Local authority premises treated5—5
Business premises, inspection visits237209446
Business premises, treatment visits1,292751,367
Dwelling houses, inspection visits172209381
Dwelling houses, treatment visits1,29281,300
Local authority, inspection visits7—7
Local authority, treatment visits42—42
Total visits3,0425013,543
Estimated kill (rattus norvegicus)7430104
Bodies recovered (rattus norvegicus)301545
Estimated kill (rattus rattus)58337620
Bodies recovered (rattus rattus)23113244
Estimated kill (mice)1,533—1,533
Bodies recovered (mice)281—281

Baiting of Sewers.
No rodent repression work in sewers was carried out during the year by the Council
owing to experiments in sewer maintenance treatments which were undertaken by the
Ministry of Agriculture and Fisheries Infestation Control Division. The treatments have
been carried out at three-monthly intervals since October, 1951, and have consisted of
direct poison baiting using 1% by weight sodium monofluoroacetate in damp sausage rusk.
The Ministry have kindly supplied the following summary of the results obtained during
the past year: —
Treatment
No. Date.
No. of
sites
baited.
No. of
sites at
which bait
was eaten.
% of site;
at which
bait was
eaten.
No. of
bodies
recovered.
6 Jan., 1953 249 53 21.28 28
7 April, 1953 251 54 21.51 28
8 July, 1953 ... 245 40 16.33 42
Test-
bait. Sept., 1953 249 90 36.14 —
9 Oct., 1953 245 51 20.82 31