[Report of the Medical Officer of Health for Surbiton] page 44

Surbiton 1964

[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 commenced in 1948:-

Date	Description	No. of manholesPre-baited	Takes of Pre-bait	No. of manholes Poison baited.	Takes of Poison bait
April 1948	let 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
Februrry 1951	5th " ”	57	17	17	15
August 1951	5th ” ”	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	11th ” ”	16	7	7	5
December 1955	12th " "	21	18	18	14
December 1956	13 th ” "	61	52	52	38
May 1957	14th " "	49	15	13	8
May 1957	14th " "	-	-	4+	2
November 1957	15th ” "	36	13	13	9
November 1957	15th " "	-	-	18+	9
April/May 1958	16th " "	—	-	28+	3
December 1958	17th " "	-	-	49+	26
July 1959	18th " "	-	-	33+	1
November 1959	19th " "	-	-	6+	4
June 1950	20th " "	-	-	7+	16
November 1950	21st " "	-	-	47+	2
July 1961	22nd " "	-	-	22+	11
November 1901	23rd " "	-	-	34+	4
June 1962	24th " "	-	-	16+	4
December 1962	25th " "	-	-	4+	3
June 1963	26th " "	-	-	10+	1
May/June 1964	27th " ”	-	-	60+	6
+ Direct poisoning with Warfarin.