[Report 1926] / Medical Officer of Health, Cardiff Port Sanitary Authority.

  • Cardiff Port Sanitary Authority (Cardiff, Wales) n 2006181154.
Date:
1926
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1926] / Medical Officer of Health, Cardiff Port Sanitary Authority. Source: Wellcome Collection.

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    PERCENTAGE OF RAT-SAMPLES HAVING FLEAS— COMPARISON FOR SHIPS AND WAREHOUSES. 1922 1923 1924 1925 1926 Total No. samples received 1922-26 cn 4J Cl Percentage having fleas Origin No. of samples received No. having fleas j Percentage having fleas No. of samples received | No. having fleas Percentage having fleas No. of samples received No having fleas Percentage having fleas No. of samples received J No. having fleas Percentage having fleas No. of samples received No. having fleas Percentage having fleas Total No. sam having fleas Ships 18 8 44‘44 11 7 63.64 23 13 56'52 54 35 64'81 49 32 6531 155 95 61.29 Warehouses 13 6 464 5 10 5 50 16 5 3U25 14 5 3571 13 5 38’46 66 26 39'24 The above table gives some idea of the comparative frequency of flea-infestation among ship-rats and dock-rats respectively. Making allowance for the smaller number of samples received from the dock-warehouses, the figures still indicate a considerably higher percentage of infestation among samples from ships. PERCENTAGE OF RAT-SAMPLES HAVING FLEAS— COMPARISON FOR YEARS 1922-1926.* Year Total number of samples received Number having fleas Percentage having fleas 1922 31 14 45.16 1923 21 12 57T4 1924 42 19 45-23 1925 71 42 5915 1926 63 38 6032 * The figures in this table include samples from sources other than ships and warehouses. RECENT LITERATURE. 1. J. Waterston, B.D., D.Sc. : Fleas as a Menace to Man and Domestic Animals. [British Museum (Natural History) Economic Series.] 2nd ed. 1920, pp. 21; 1 plate and 6 text-figures. 2. H. McG. Robertson : A Possible Explanation of the Absence of Bubonic Plague in Cold Countries. U.S. Public Health Reports, Vol. 38, No. 27 (July 6, 1923), pp. 1519-1531. 3. A. W. Bacot and C. J. Martin : The Respective Influence of Temperature and Moisture Upon the Survival of the Rat Flea (Xenopsylla cheopis) away from its Host. Journal of Hygiene (1924), Vol. 23, No. 1, pp. 98-105. 4. Carroll Fox and E. C. Sullivan : A Comparative Study of Rat-Flea Data for Several Seaports of the United States. U.S. Public Health Reports, Vol. 40, No. 37 (Sept. 11, 1925), pp. 1909-1934. 5. J. A. Sinton : The Indian rat-fleas, with special reference to the identification of the “plague fleas.” Indian Jour. Med. Research, 1925 ; 12, pp. 471-478, 2 plates.