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

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City of London 1950

[Report of the Medical Officer of Health for Port of London]

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PART II
NO. 1. WAREHOUSE - WARFARIN ("RAX" POWDER)
Premises Similar to No. 3 warehouse in construction, but contained
some rat harbourage in the form of a false ceiling over one
section of the second, floor. There was also considerable -wall
damage in this section and a direct run into a workmen's canteen.
The amount of rat attractive foodstuffs was somewhat less
than in No. 3 warehouse.
Infestation Sligh recent runs and excreta on upper floors.
Operation As described in Part I.
"COMPOUND 42" - RAX POVfflER

TABLE I

CHOICE OF BAITS TAKEN - 13 STATIONS

PeriodSausage RuskCornmealOatmeal
Aug. 28th 1st day95 Grams75 Grams30 Grams
2nd "225 "165 "-
3rd "700 "230 "30 "

TABLE II POISONED RUSK TAKES - 24 STATIONS

PeriodTakePeriodTake
Sept. 3rd 1st day635 Grams6th day625 Grams
2nd "850 "7th "215 "
3rd "840 "8th "80 "
4th "740 "9th "-
5th "670 "10th "-

TABLE III RATS RECOVERED

PeriodMaleFemaleLocation
4th day-2Top Floor
5th "-3Top & 2nd
6th "-5Top, 2nd & outside
7th "12Top & 2nd
8th "--
9 th "--
10th "--
112
"1080"

TABLE IV

14th Sept. 20 POINTS OF LIQUID ON TOP FLOOR

DateRats RecoveredLocation
M.F.
15th Sept.811st and 2nd Floor
17th "1-Top Floor
18th "---
91

(18)