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5
(b) No. of infecting cases giving rise to return cases more than 28
days after release from isolation 4
,, return cases they gave rise to 4
,, infecting cases per cent. of total home cases 6.7
„ return cases per cent. of total home cases 6.7
II. Hospital Cases.—Approximately 514.
(a) No. of infecting cases giving rise to return cases not longer than
28 days after discharge 15
,, return cases they gave rise to 22
,, infecting cases per cent. of total hospital cases 2.9
,, return cases per cent. of total hospital cases 4.3
(b) No. of infecting cases giving rise to return cases more than 28
days after discharge 9
„ return cases they gave rise to 12
,, of infecting cases per cent. of total hospital cases 1.8
,, return cases per cent. of total hospital cases 2.3
Small Pox.—47 cases of Small Pox were notified during 1929 mostly in the Stonebridge area.
The cases were notified from 15 different roads and 27 different houses.
The disease was of the mild type prevalent in and around London. One death occurred in
a man aged 63 years. Details of this are given in the Hospital Report, page 71.
The first case which came to knowledge was that of a boy of 4f years removed to hospital on
12th April, 1929. The source of infection was untraceable. Five other isolated cases came to light
and were removed to hospital between that date and 25th May, 1929.
During June 5 cases living in Willesden and several living outside Willesden occurred amongst
the guests at a wedding in the Stonebridge area of Willesden held on 19th May, 1929, at which it was
subsequently ascertained an unrecognized case of Small Pox was present in the early stage of the
rash. 9 other cases occurring in Willesden were indirectly attributable to this wedding which is
thus known to have accounted for 14 Willesden cases.
During June and July 2 other cases arose the one secondary to the other in which the source
of infection was not actually traced but the home address of the first patient was in the area in which
Small Pox had been occurring.
In August 2 cases were notified in the Kensal Rise area the one being secondary to the other,
the rash of the second occurring 20 days after the rash of the first as appears not infrequently to
happen in this type of Small Pox. The source of infection was untraceable.
On the 30th August, 1929, 1 case of Small Pox again appeared in Stonebridge, no cases having
been notified from this area since 26th June, 1929.
After the removal of this isolated case nothing further came to light until 9th October, 1929,
when 3 cases were discovered, again in the Stonebridge area, as a result of one of them attending the
Municipal Health Centre. From this date until early in December 17 cases were notified all apparently
connected with each other as relatives or playmates, 8 occurring amongst the members of one family.
On 23rd December, 1929 a child of 6 months resident in Willesden Green was removed to a
Metropolitan Asylums Board Hospital from a London Hospital. Subsequent information showed
that this might have been contracted from an elder brother.
A case removed with Small Pox in July to the M.A.B. from a London Hospital where she
had been several months an inmate completes the story of the 47 and at the end of the year Willesden
was free from Small Pox.
Of the 47 patients 34 were unvaccinated; 3 were successfully vaccinated for the first time
10 days before the onset of their illness; 1 was unsuccessfully vaccinated for the first time 3 days
before the onset of his illness; 1, aged 58 years, was successfully vaccinated in infancy and successfully
revaccinated 8 days before the onset of her illness; 8 were successfully vaccinated in infancy their
ages being 60 years, 55 years, 52 years, 50 years, 40 years, 38 years, 31 years and 14 years, but this
last case proved not a case of Small Pox.
During 1929, 7,858 visits of supervision were paid to Small Pox contacts residing or working
in Willesden.
No vaccinations were performed by the Medical Officer of Health under the Public Health
(Small Pox Prevention) Regulations, 1917.
All the cases were nursed in the Willesden Small Pox Hospital, Kingsbury, with the exception
of 2 admitted to the hospitals of the Metropolitan Asylums Board.