Further preliminary reports on flies as carriers of infection.

Date:
1909
Catalogue details

Licence: In copyright

Credit: Further preliminary reports on flies as carriers of infection. Source: Wellcome Collection.

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    (2) From railway siding : House flies ... Surface cults. Intestine cults. ... (3) From gasmen's room : House flies ... Surface cults. Intestine-cults. ... (4) From house near glue worTcs : House flies ... Surface cults. Intestine cults. ... Small flies Surface cults. Intestine cults. ... Blue-bcttles ... ... Surface cults. Intestine cults. ... (5) From school leitchen : House flies ... Surface cults. Intestine cults. ... Small flies Surface cults. Intestine cults. ... Blue-hottles Intestine cults. ... (6) From near jam. factory House flies ... Surface cults. Intestine cults. ... Small flies Surface cults. Intestine cults. ... Total No. examined. No. infected. Organisms found in groups. Remarks. I. II. III. IV. 24 12 12 12 4 8 10 2 8 10 4 6 6 4 2 4 2 2 12 4 8 2 2 34 14 20 G 2 4 6 6 2 2 2 2 2 2 4 2 2 4 4 Mlltol MINIM MMMMI l^ol Itol II II 1 1 II 1 1 II 1 1 1 II 1 1 1 1 1 II 1 II 1 1 II II 1 1 1 .oto II 1 1 II 1 II 1 1 II 1 1 1 1^1 2 2 (25 per cent, in- I fected. ( 16'G per cent, in- i’ fected. 1 I I 26 flies examined, ^ 4 (15 per cent.) i infected. J j 18 flies examined, V 4 (22‘2percent.) j infected. J 1 I 40 flies examined, y 4 (10 per cent.) j infected. J — — 10 6 15 4 — So far as can be inferred from the small numbers hitherto examined, the highest degree of infection is found amongst the flies obtained from the neighbourhood of decaying animal matter, and the next highest amongst those caught near manure. Those from other situations show an approximately equal degree of infection with lactose fermenting bacteria of the colon group. House flies, small flies, and blue-bottles were found to be infected in approximately equal numbers. Surface infection was two-and-a- half times more common than intestinal infection. Attention was first confined to those coli-like organisms capable of producing acid and gas in lactose, but later certain other organisms were examined. Amongst these an organism of some interest was discovered, which was isolated on two occasions, once from the intestinal contents of a small fly caught in the school