[Report of the Medical Officer of Health for London County Council] page 164

London County Council 1952

[Report of the Medical Officer of Health for London County Council]

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Table: T able 1A — A.P.T. antigen Poliomyelitis in the month of:

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T able 1A — A.P.T. antigen Poliomyelitis in the month of:

Immunised in the month of	No. at risk	1949												1950				Total
Immunised in the month of	No. at risk	Jan.	Feb.	Mar.	April	May	June	July	Aug.	Sept.	Oct.	Nov.	Dec.	Jan.	Feb.	Mar.		Observed	Expected
		000	001	0-01	0-01
January	863	—	—	—	—													—	0.03
January	863		O.OO	0.02	0.01	0.02												—	0.03
February	1,658	—	—	—	—													—	0.05
February	1,658			0.01	0.02	0.02	0.02											—	0.05
March	1,711			—	—_	—	—_											—	0.07
March	1,711				0.00	0.01	0.01	0.03										—	0.07
April	1,315				—	—	—	—										—	0.05
April	1,315					0.01	0.01	0.03	0.63									—	0.05
May	1,545					_—	1	_—	_—									1	0.68
May	1,545						0.01	0.03	0.56	0.43								1	0.68
June	1,385						1	1	—	—								2	1.03
June	1,385							0.01	0.52	0.40	0.62							2	1.03
July	1,280							1	2	—	—							3	1.55
July	1,280								0.27	0.41	0.65	0.39						3	1.55
August	1,336								1	2	—	—						3	1.72
August	1,336									0.21	0.67	0.40	0.13					3	1.72
September	1,381									2	2	—	—					4	1.41
September	1,381										0.72	0.85	0.28	0.09				4	1.41
October	2,947										1	—	—	—				1	1.94
October	2,947											0.36	0.24	0.08	0.08			1	1.94
November	2,517											1	—	—	—			1	0.76
November	2,517												0.07	0.05	0.05	0.05		1	0.76
December	1,598												—	—	—	—		—	0.22
							Total diagonals observed							1.67	2.84	2.50	2.50	15	9.51
														7	8	—	—	15	9.51

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Figures in italics are the expected cases calculated from the not inoculated group, see text.