[Report 1938] / Medical Officer of Health, Liverpool Port Health Authority.

  • Port Health Authority of Liverpool. n 2014184020.
Date:
1938
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1938] / Medical Officer of Health, Liverpool Port Health Authority. Source: Wellcome Collection.

    45/104 (page 41)
    A. S <1 Vessels up to 300 tons 0 10 0 ,, from 301 tons up to 1,000 tons 11 0 ,, ,, 1,001 3,000 ,, 2 2 0 ,, „ 3,(Mil f * 10,000 ,, 3 3 0 ,, over 10,(K)0 tons 4 4 0 W. M. FRAZER, Medical Officer of Health. The following table shows the number of fumigations of vessels during (he past sixteen years and the number of exemptions for 1928-1938, together with the number of rats anil mice discovered after fumigation during the same period and the average number of rats and mice per vessel :— Year. Number of Fumigations. Number of Exemptions. Total Number of Rats found after Fumigations. Total Number of Mice found after Fumigations. Average Number of Rats per Vessel. Average Number of Mice per Vessel. 1923 90 — 5,295 57 58.83 0-63 1924 132 — 7,388 300 55-96 227 1925 1 19 — 4,817 257 40-47 215 1926 156 — 3,433 111 2200 0-71 1927 119 — 1,967 130 16-52 109 1928* 130 11 1,804 190 12-79 1 34 1929 221 114 2,614 292 7-80 0-87 1930 187 316 1,762 75 3-50 0-14 1931 162 314 <166 182 202 0-38 1932 142 347 1,434 428 2-93 0-87 1933 137 416 1,137 324 205 0-58 1934 154 419 1,183 238 2-06 0-41 1935 172 390 1,178 135 209 024 1936 153 421 1,005 220 1 -75 0-38 1937 153 496 1,488 138 2-29 0-21 1938 156 458 1,029 280 1-67 0-45 *ln 1928 the first International Certificate was issued —on the 5th October. During that year 25 Deratisation and If Exemption Certificates were issued.