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(15)
On the 1st November a special Sonne dysentery investigation was
begun, which is being carried out throughout London, to discover
the effect of environment on the spread of infection by an analysis
of all notified cases.
This investigation, so far as the Boroughs are concerned,
includes, besides particulars of the notified case (including the
severity and duration), a list of other household members, particulars
of housing, nature of the outbreak and development of secondary
cases.
EXCLUSION FROM WORK OF CONTACTS OF INFECTIOUS DISEASE
Under the National Insurance Act of 194-6, a certificate can be
issued in any case where the Medical Officer of Health considers it
advisable that a person should be excluded from work. This is usually
done where a person is suspected of being a "carrier" of a disease,
or has been in contact with a disease, and where the person, because
of the nature of his/her occupation, is liable to transmit the diseases
(e.g. a food handler).
The granting of such a certificate enables the person affected to
claim sickness benefit. No certificates were issued during the year.