H.—3l.

SECTION 5.--BAOTERIOLOGICAL LABORATORIES. The facilities available in the Dominion for the bacteriological investigation of disease are being gradually extended. Apart from the main laboratories in the four centres, there are now six branch laboratories established in connection with the public hospitals of the subsidiary centres of the Dominion. The table below, which summarizes the work of a definite public-health nature performed in these laboratories, shows the importance and wide range of the examinations undertaken in these institutions.

Table showing Public Health Work performed in Bacteriological Laboratories during the Year ended 31st December, 1922.

3—H. 31.

17

Number of Examinations. Positive. Nefi; ttive. Disease. ! (3 3. I § 1 1 M | c6 I 7 I, J I I II. 1 1 i p 'Si > a M '8 S If % rrj § d 9 1 H i *; 9 3 ■s & c5 ft a o 03 "E III A 3 a o ■ft I "ctS 43! u ! i a* u s B & a Diphtheria diagnosis Diphtheria clearance Tuberculosis — Sputum Cerebro-spinal fluid Urine Pleuritic fluid Peeoes Other material Typhoid-fever diagnosis— Agglutination tests Blood-culture Faeces Typhoid-fever clearance — Faeces Urine Cerebro-spinal-fever diagnosis— Swabs CS. fluid Cerebro-spinal-fever clearance : Swabs Gonorrhoea Ophthalmia neonatorum for gonoeoccus Syphilis, spironema, pallidum Syphilis, Wasserman reaction Hydatid disease Plague : Examination of rats Vincent's angina Leprosy Anthrax Tetanus .. Lethargic encephalitis Actinomycosis Others 20 30 69 11 I 372 108 1 61 3 1 155 250 69 2 26 1 I 1 4 1 4 4 1 30 8 7 2 49 192 91 1 9 1 9 15 34 9 2 Kit) 144 46 8 8 5 1 1 696 244 10 I 5 62 253 651 70 9 20 1 I 6 !.) 2 6 2 111 416 97 I 3 2 10 3 1 2 1 1 38 60 62 1 2 i 1 58 67 no i 10 i 12 6 27 14 I 1 1 1,229 7 19 6 30 3 90 40 49 20 8 3 596 1,090 354 15 36 3 4 8 59 28 32 31 49 II I 30 15 105 1 I 8 II 10 26 2 21 II 2 3 14 354 281 450 25 111 50 29 46 128 5 39 30 15 810 571 294 16 97 6 18 32 I 5 5 10 1 12 1 3,201 705 28 47 32 14 30 796 1 19 5 16 8 34 1,487 3,371 496 26 132 62 5 24 56 4 29 23 31 4 22 967 923 525 29 74 25 42 15 18 7 5 360 114 228 II 50 12 3 20 10 3 2 15 2 69 9 1 9 32 56 682 II 72 25 4 15 172 55 7 28 135 6 116 2 788 35 245 135 26 1 1 K 9 2 3 2 10 17 4 2 15!) 26 245 136 104 454 55 1,040 489 297 7 3 2 1 I 9 14 1 8,204 3 2 22 844 6 3 3 2,878 26 71 26 325 6 54 254 1,8 15 II 1 31 9 4 1 1 4 1 4 23 I I 5 4 28 8 3 26 1 55 1 19 I 8 , 4 1 Note. —This report re work, investigations, or rep ipresi >orts mts o on sp inly p jecimc lart ' of tin ither 3 WOI than k pel th osi •form i of a ied a' i pub t, the )lic-h( aboA salth 'e laboi nature. "atories. It dot es not include instructional ma o