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 treatments carried out since disinfestation of Sewers coiunenced in 1948:—
| Date | De scription | No. of Manholes Pre-baited | Takes of Pre-bait | No. of Manholes Poison baited | Takes of Poison bait | |
|---|---|---|---|---|---|---|
| April 1948 | 1st | Initial treatment | 218 | 77 | 77 | 31 |
| July 1948 | 2nd | „„ | 77 | 14 | 10 | 8 |
| February 1949 | 1st | Maintenance treatment | 80 | 49 | 49 | 18 |
| July 1949 | 2nd | „ „ | 71 | 20 | 24 | 7 |
| March 1950 | 3rd | „ „ | 58 | 41 | 41 | 21 |
| July 1950 | 4th | „ „ | 41 | 20 | 22 | 13 |
| February 1951 | 5th | „ „ | 57 | 17 | 17 | 15 |
| August 1951 | 6th | „ „ | 35 | 14 | 14 | 6 |
| February 1952 | 7th | „ „ | 69 | 36 | 36 | 15 |
| July 1952 | 8th | „ „ | 58 | 14 | 14 | 4 |
| February 1953 | 9th | „ „ | 54 | 13 | 13 | 8 |
| February 1954 | 10th | „ „ | 47 | 16 | 16 | 8 |
| August 1954 | 11 th | „ „ | 16 | 7 | 7 | 5 |
| December 1955 | 12th | „ „ | 21 | 18 | 18 | 14 |
| December 1956 | 13th | „ „ | 61 | 52 | 52 | 38 |
| May 1957 | 14th | „ „ | 49 | 15 | 13 | | |
| May 1957 | 14th | „ „ | — | — | 4+ | 2 |
| November 1957 | 15 th | „ „ | 36 | 13 | 13 | 9 |
| November 1957 | 15th | „ „ | — | — | 18+ | 9 |
| April/May 1958 | 16th | „ „ | - | — | 28+ 49+ | 3 26 |
| December 1958 | 17th | „ „ | — | - | ||
| July 1959 | 18th | „ „ | — | — | 33+ 6+ | 1 |
| November 1959 | 19th | „ „ | - | - | 4 |
+ Direct poisoning with Warfarin.
54.