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16 [Appendix IV.
In the remainder of North Paddington, 3 or more cases were reported from—
Cases.
Houses.
Cases.
Houses.
Ashmore Road
4
4
Kilburn Park Road
3
2
Bravington Road
10
8
Portnall Road
8
5
Clarendon Street
9
6
Saltram Crescent
6
6
Elgin Terrace
5
4
Shirland Road
4
3
Hall Place
5
4
Westbourne Park Road
4
1
Harrow Road
3
3
The frequency of multiple infection in the homes in each of the last three years is
indicated below:—
Houses with
1900.
1899.
1898.
1 case
117
140
167
2 cases
13
11
21
3 „
1
5
2
4 „
2
1
2
5 „
—
—
1
From 4 of the 13 houses where 2 cases occurred, both the cases were certified on the
same day; in one, the second case was presumably a "return" case; in another, the second
case was the woman who nursed the first; and in a third, the second case was in another
family living on the same floor as the first case. With the exception of the return case just
mentioned, the circumstances indicated direct personal infection from the first to the second case.
Of the 2 groups of 4 cases, one was a family in which the failure to diagnose the first case led to
the 4 cases being reported together, while the other group was due to the same cause, but the
eases were not reported on the same day. So far as can be ascertained, the intervals between the
secondary and primary cases were as follow:—
In the 13 groups of 2 cases—
Patients sickened on same day. 2 groups.
Interval between onsets of first and second cases—
1 day 1
2 days 1
5 „ 2
6 „ 3
7 „ 2
9 „ 1
Second case followed return of first from hospital. 1 case.
In the 1 group of 3 cases—
The first case occurred in August, and was removed to hospital on the second day of illness.
The second case was in a member of another family occupying same tenement, and occurred
in December, that is, 4 months later.
The third case sickened 9 days after the second.
Of the 2 groups of 4 cases—
In one, the first case was not certified until the fourth day, when the second patient was taken
ill, and the 2 cases sent to hospital together. The third case followed next day, and the fourth
4 days later.
In the other, the intervals between the onsets were 1 and 2 days (2 patients sickening together).
Attention has on former occasion been called to the occurrence of death at or very nearly the
same date as notification. Last year 1 patient died before the case was reported, 5 died the same
day, and 4 on the day following.