London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Twickenham 1949
[Report of the Medical Officer of Health for Twickenham]
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Table 35 (continued)
Table 35 (continued)
| B. alkaligenes | 1 | - | - | - | 1 | - | - | - | - | - | - |
| 5 | — | — | 7 | — | l | — | — | 6 | 19 | ||
| Lactose fermenting coliforms | 5 | — | — | 1 | 5 | — | — | 1 | — | 3 | 15 |
| Non-lactose fermenters of non-pathogenic type | 2 | 1 | — | — | 2 | — | — | 1 | — | — | 6 |
| Strep, faecalis | 8 | — | — | 1 | 6 | — | — | — | — | 3 | 18 |
| Non-pathogenic airborne contaminants : Diphtheroid bacilli | 4 | — | — | 1 | 2 | — | — | 1 | — | 5 | 13 |
| B. mycoides | 2 | — | — | — | 2 | — | — | — | — | — | 4 |
| M. flavus | 1 | — | — | — | — | — | — | — | — | — | 1 |
| Micrococcus | 1 | — | — | — | — | — | — | 1 | — | 2 | 4 |
| B. mesentericum | — | — | — | - | 1 | — | — | — | — | — | 1 |
| B. megatherium | — | — | — | - | — | — | 1 | — | — | — | 1 |
| Strep, viridans | 3 | — | — | — | — | — | — | — | — | 5 | 8 |
| Strep, non-haemolytic | 1 | — | — | — | 1 | — | 1 | — | — | 1 | 4 |
| Sporing aerobes | 3 | — | — | — | — | — | 1 | — | — | 1 | 5 |
| Staph, albus | 1 | - | — | — | 1 | — | 2 | 1 | — | 4 | 9 |
| B. vulgatus | — | - | — | — | — | — | 2 | — | — | — | 2 |
| Sterile | 9 | — | 6 | — | — | 3 | 3 | 2 | 22 | 45 | |
| Infections found on insects | 92 | 2 | 4 | 56 | — | 11 | 8 | — | 41 | 214 | |
| Live insects examined | 53 | 1 | 6 | 3 | 31 | — | 10 | 9 | 2 | 57 | 172 |
| Insects infected | 44 | 1 | — | 3 | 31 | — | 7 | 6 | — | 35 | 127 |
| Live insects caught | 131 | 2 | 6 | 6 | 488 | 103 | 16 | 14 | 21 | 257 | 1,044 |
| Organisms per insect examined | 2.1 | 2.0 | 1.3 | 1.8 | - | 1.6 | 1.3 | - | 1.2 | 1.7 |