2
The first period saw the introduction of preserved lymph and its trial on a
small scale in various districts of the Presidency proper. It was an experiment
and the results were not equal to those obtained from human and calf lymph.
During the second period the use of preserved glycerinated lymph was
greatly extended in all registration districts, except Sind. A large proportion
of the work was done with preserved lymph, but still the results, although
showing great improvement, fell short of those obtained from human and
animal lymph.
The last period has witnessed the introduction of glycerinated lymph into
all British districts of the Presidency except Sind, and into a considerable
number of the Native States. The use of preserved lymph has greatly
facilitated the work of vaccinators, as shown by the large increase in the number
of operations, while the improved methods of preparation and storage of lymph
and the greater experience and skill of vaccinators in using it, have brought the
results up to the best obtainable by any kind of fresh lymph.
Percentage of " unknown "
cases.
8. The percentage of unknown cases was 8.01 against 7.46 in 1909-10
and 7.31 in 1908-09. An increase in "unknown"
cases was chiefly noticeable in the Western, Central
and Sind Registration Districts. The Deputy Sanitary
Commissioner, Sind Registration District, states that " the high percentage of
unknown children is due largely to the fact that parents deliberately avoid
showing the results lest children be taken as vaccinifers, and also to the
nomadic character of a large portion of the population of the Province. "
Re-vaccination.
9. The number of persons re-vaccinated in 1910-11 was 59,403 as
compared with 48,885 in the preceding year and
52,362 in 1908-09; the average annual number of
persons re-vaccinated during the triennium under review being 53,550 against
41,267 in the preceding triennium, showing an increase of 12,283. The
number of successful re-vaccinations was 19,065 during 1910-11 as compared
with 20,979 in the preceding year and 22,975 in 1908-09. For the triennial
period under review the average annual number of successful re-vaccinations
was 21,006 against 22,847 during the preceding three years.
Re-vaccination is chiefly confined to the large towns and varies according
as small-pox is more or less prevalent.
Vaccination under various
establishments.
10. The average number of primary operations performed by the various
establishments during the three years under review
as compared with previous triennial periods may be
summarized as under :
Vaccination in Municipalities shows a steady increase in numbers from
59,431 in the triennium 1902-05 to 90,806 in the three years 1908-11.
The Cantonment establishment records a decline from 1,933 to 1,782
operations during the same two triennial periods.
The Local Fund Vaccinations have maintained a steady average, the
numbers being 427,337 in 1902-05, 448,702 in 1905-08 and 443,917 in 1908-11.
In Native States there was a steady rise from 76,237 in the triennium
1902-05 to 87,989 in the triennium under review.
Lymph supply.
11. The quality of lymph supply was reported on the whole as good by
the Deputy Sanitary Commissioners.
Result of lymph.
12. The following table shows the different kinds of lymph used, the
work done with each kind and the comparative results
obtained in each district during the year 1910-11,
as required by Government Resolution, General Department, No. 1039, dated
20th February 1901:—