H.—3l.

SECTION 4.—BACTERIOLOGICAL LABORATORIES. The following table shows the work of a public-health nature performed in the Bacteriological Laboratories at Auckland, Napier, Wellington, Ghristchurch, Dunedin, and Invercargill during the year ended 31st December, 1920 : —

14

Number of Examinations. Disease. Positive. i i lit! 1 S 1 f i -u fc ts 6 Positive. a s a § 8 I B I- 3 M fl i I 3 p. fl rt < 7a Negative. 8 q i 1 33 s a o i Diphtheria diagnosis ,, clearance „ contacts Tuberculosis, pulmonary ,, cerebro-spinal „ genito-urinary „ other lesions Typhoid-fever diagnosis : Agglutination reaction Typhoid-fever diagnosis . Blood culture „ clearance ,, faeces .. ... „ urine Pneumococcal meningitis Meningococcal „ Influenzal ,, Meningococcal carriers (diagnosis) „ „ (clearance) „ contacts Gonorrhoea Gonococcal ophthalmia Syphilis, spirochaete .. „ Wassermann reaction Hydatid disease— Pulmonary Liver Sputum and pus Pleural Lung Others .. .. Other diseases — Vincent's angina Influenza sputum Anoebic dysentery Malaria Puerperal septicaemia Leprosy Anthrax Ringworm Oysticercus celluosae (rabbit) Bilharzia haematobium Lethargic encephalitis Pneumococcus sputa Malignant oedema Tetanus Cholera Conjunctival diphtheria Empyaomia Actinomycosis .Erongenes eapsulatis Faeces for parasites and ova Cerebro-spinal fluid Plague (smears from rats) .. 311 121 133 2 4 2 43 47 81 85 4 18 10 23 564 260 1 10 9 45 225 703 52 65 231 39 316 176 28 146 40 2 2 7 2 4 10 2 823 190 I 192 108 768 236 32 8 36 71 13 17 122 96 2,466 .. 2 932 7 57 41 175 922 1,355 2,612 672 650 473 595 13 38 219 52 40 13 67 22 143 138 89 174 7 18 4 10 14 3 24 9 3 3 6 1 12 3 2 6 1 3 7 2 6 3 .. i '.'. 2 26 .. 2 74 26 24 9 25 2 30 15 1 36 48 2 50 7 2 22 3 82 25 56 10 1 32 6 2 "l 1 4 21 8 io '.'. 3 u "7 "7 "2 89 3 2 461* 41 1 2 332 6 3 757f 129 1 15 11 1 1 1 163§ .. 280 116 2 5 7 6 928 368 8 12 1,142 20 271 40 8 3 6 589 351 1 21 1 238| 1 2 1 1 4 4 2 7 2 1 5 25 3 "1 '.. i 2 2 2 7 13 46 7 45 1 27 2 1 6 2 6 15 2 2 2 43 9 27 2 2 "5 2 '2 i 1 1 1 2 i 1 " 1 i 1 i 6 "1 i I '.. 2 3 1 i 1 i '3 1 *2 1 1 4,781 '.. * 65 weakly positive or doubtful. t 3*1 positive or doubtful. weakl; positi' tii ive or di loubtful. t '15 1 weakly positive or doubtl tful. § 33 1 weakly Note.—This report represents only instructional work, investigations, or repi tart o irts 01 the speci sci work :irnens perfor i other rmed at the than those above laboral j of a public-! .tories. ■health 1 It does not ir nature. delude