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9
Bacteriological
Number of Colonies
developing ) 1 day at 37°C. 2 days at 37°C. 3 days at 20°C.
on Agar ) 2 per ml. 4 per ml. 5 per ml.
Present in Absent from Probable number
Presumptive Coli-
aerogenes Reaction— 100 ml. 0per 100 ml.
Bact. coli. (Type 1)— 100 ml. 0per 100 ml.
C1. welchii Reaction 100 ml. 10 ml. 0per 100ml.
3. The water supplied had no plumbo solvent action but
samples were tested for presence of metals.
4. No action was required in respect of contamination of
the water. All water was chlorinated before distribution and
all new and repaired mains were chlorinated before being
restored to use.
5. With the exception of one or two outlying cottages, all
the houses in the area were supplied from the public water
mains. Only two cottages were supplied by a common standpipe,
they had previously been condemned, and at the end
of the year the occupiers were rehoused.
Food Poisoning
Nine unrelated cases of food poisoning were notified
during the year. Investigations were made in all cases and
twenty-four other cases were ascertained including a number
at an old persons home who were affected with staph, aureus.
The sources of infection were not ascertained due to lateness
of information or other causes.
Establishments for Massage and Special Treatment
One establishment was licensed under Sections 355-357
of the Middlesex County Council Act, 1944.
Conclusion
In conclusion I should like to thank the members of the
Committee for the support which they have given me during
the year and also Mr. Bell and the staff of the department for
their able and willing assistance.
F. H. WOODS,
Medical Officer of Health.