Proceedings of the Royal Society of Edinburgh Volume 26, No. 6
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...occurring in Warrington in 1743 (diagram VII., Table A, No. 8) is given for comparison. The asymmetry of this is not so great. Although both these epidemics are definitely limited as to beginning and end, the constants are still required by type IV. This great asymmetry was not the rule, however, in places where smallpox was more frequently epidemic, and where, in consequence, a sufficient dilution of the susceptible persons existed to allow the epidemic to run a more natural course, and when even at the end there were still present in the population sufficient persons open Diagram VII. Each abseissal unit is one month. to infection to permit the decay in the infectivity of the organism to be observed. An epidemic in Glasgow in 1784 t is given to illustrate this (Table A, No. 10). The epidemics of smallpox in Gloucester in 1896 and London in 1902 (Table A, Nos. 11, 12, 13, 14) may be compared with those of last century. At first sight, in epidemics where all the machinery of modern sanitation has been brought to bear, it might be expected that the form of the course would in some way be altered. On examination, however, the course of the London epidemic is Report on Epidemic of Smallpox in Warrington in 1892-3, p. 7. t Watt's Treatise on the Chincough, Glasg., 1813, p. 344. + Report of the Royal Commission on Vaccination, --Appendix on Gloucester. Reports of Metropolitan Asylum Boards, 1901-2. seen to be very much that of presanitary days (diagrams VIII. and Viiia.). I do not mean to infer that there is no difference in the amount of disease present in a given epidemic, but that a uniform Diagram VIII. force acting towards the limitation of an epidemic produces no perceptible effect on the form of the curve. In the case of...
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