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 la a summary of the several treatments carried out since disinfestat ion of sewers commenced in 1948-
Date | Description | No. of manholes ore-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 19 52 | 8th " " | 58 | 14 | 4 |
February 1953 | 9th " " | 54 | 13 | 8 |
February 1954 | 10th " " | 47 | 16 | 8 |
August 1954 | 11th " " | 16 | 7 | 5 |
December 1955 | 12th " " | 21 | 18 | 14 |
December 1956 | 13th " " | 61 | 52 | 38 |
Results of Initial and Annual Test Baiting-
No.of manholes baited | Takes of bait | Percentage 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 | 179 | 7 | 3.91 |
Eighth 1956 | 162 | 10 | 6.173 |