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 Surbiton]
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The following is a summary of the several treatmente carried out since disiesetation of sewers commenced i 1948
Date | Descrition | No. of | manholes pre-baited | Takes of pre-bait | Takes of poison bait . |
---|---|---|---|---|---|
April, 1948 | 1st Initial treatment | 218 | 77 | 31 | |
July, 1948 | 2nd " " | 77 | 14 | 8 | |
February, 1949. | 1st Maintenance treatment | 80 | 49 | 18 | |
July, 1949 | 2nd " " | 71 | 20 | 7 | |
March,1950 | 3rd " " | 58 | 41 | 21 | |
July, 1950 | 4th " " | 41 | 20 | 13 | |
February, 1951 | 5th " " | 57 | 17 | 15 | |
August, 1951 | 6th " " | 35 | 14 | 6 | |
February,1952 | 7th " " | 69 | 36 | 15 | |
July, 1952 | 8th " " | 58 | 14 | 4 | |
February,1953 | 9th " " | 54 | 13 | 8 | |
February, 1954 | 10th " " | 47 | 16 | 8 | |
August, 1954 | 11th " " | 16 | 7 | 5 |
Results of Initial and Annual Test Baiting:-
No. of manholes baited | Takes of bait | % of takes | |
---|---|---|---|
Initial 1947/8 | 384 | 64 | 16.666 |
Second 1948 | 160 | 13 | 8.125 |
Third 1949 | 229 | 8 | 3.493 |
Fourth 1950 | 250 | 9 | 3.600 |
Fifth 1951 | 200 | 11 | 5.500 |
Sixth 1952 | 201 | 7 | 5.473 |
Seventh 1953 i | 179 | 7 | 3.91 |
40.