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July 3rd and 4th three more cases occurred. Seven out of the 9 cases were amongst the
"unprotected" group.
Vicarage-road, School—Class closure was resorted to a considerable number of times during
the earlier part of 1904. Class V. was closed from March 16th until April 11th (including
the Easter holiday), on account of the occurrence of a single case on March 12th. This class was
again closed from May 27th to June 10th on account of 8 cases occurring between May 13th and
May 26th (diagram XVI.).
Class IV. was also closed during the latter period on account or a single case occurring on
May 20th; this class had been closed in the previous October and December.
Class VI. (the Babies' class) was closed from May 16th to 30th on account of 6 cases between
April 29th and May 12th. During this latter period 16 cases failed in this class, making 22 in all
out of a number of 45 reported not to have had measles ; no further cases occurred on resumption.
In this Babies' class, therefore, in which 45 out of 90, or exactly 50 per cent., were unprotected, it
must be assumed that a certain number were saved from an attack by closure. In none of the other
classes were any cases ascertained to have occurred during the closing period.
In Class II. one case occurred on July 1st, aud the class was closed on July 7th ; no further
case was ascertained to have occurred, and it was not likely that such should have happened,
as only 6 children out of 59 were said not to have had a previous attack; the single case was
amongst these 6.
Burrage-grove School.—This school is in the non-closing division. In spite of the fact that one
or two cases occurred in every class during the year, there were no secondary cases in any instance,
although the protection by previous attacks was not great.
Class.
Age.
No.
of Children.
No.
Unprotected.
Cases of Measles
during year.
A 7 70 18 1
B 6 57 19 2
C 5 48 20 2
D 4½ 57 24 1
E 4 66 38 2
F 3 106 ? 1
Cases occurred also in the following schools before the summer holidays of 1904, but owing to
pressure of work the details could not be followed out:—
Closing Schools.—Church Manor Way, High-street, Ancona-road, Wickham-lane, Bo3tall-lane,
Slade, Plumstead-road.
Non-closing Schools.—Elizabeth-street, Wood-street, Plum-lane, Mulgrave-place.
In none of these schools did any severe outbreak, however, occur.
Since August, 1904, it has been found possible to follow up every case of measles reported, and
many instructive outbreaks have been studied in detail.