3
REPORT OF THE KING INSTITUTE, GUINDY
passage cycle, see Part II. This second factor has considerably increased the yield
per calf. The average this year is 26.2 grammes instead of 23.8 grammes, the
average for the last three years. The record yield has gone up from 56 to 75
grammes.
(3) Vaccination results— ( a ) Type of vaccination .—Details are given in
Table IV. As usual Primary vaccinations formed about half the total.
(b)
Primary vaccination .—The case success rate was 98 per cent, as against
96.7 per cent last year and 97.4 per cent the year before last. The insertion
success rate was 91.6 as against 88.0 per cent last year and 89.7 per cent the year
before last. It is to be noted that both the case and insertion success rates
obtained this year are the highest on record. This is mainly due to the increased
potency of the lymph supplied as already noted. Table V gives the monthly
vaccination rates. It is seen that the minimum case success rate in any month
was 96.5 per cent.
The district success rates are given in Table VI. It is seen from the Table
that four out of the 25 districts listed, with Madras and municipalities in general,
all obtained a case success rate of over 99 per cent, while 12 districts obtained it
over 98 per cent, six over 97 per cent and two districts over 96 per cent. The
results obtained this year are thus very satisfactory indeed.
(c)
Re-vaccinations .—The
total number of re-vaccinations done was
479,266, with case and insertion success rates of 32.8 per cent and 22.5 per cent
which are better than last year's rates of 30.7 per cent and 19.7 per cent
respectively.
(d)
Amount of lymph unaccounted for .—The details are given in Table VI.
The percentage of lymph unaccounted for was 7.9 as against 6.9 last year and
12.2 the year previous. The following districts show a percentage of over 10 :—
Tanjore (22.8), Cuddapah (20.8), East G ō dā vari (16.9), Madras Corpora
-tion (14.6), Kistna (14.4), Anantapur (13.8), Ramnad (11.3) and Vizagapatam
(11.3).
STOCK VACCINE SECTION.
( 1 )
C h a r g e
. — M i l i t a r y A s s i s t a n t S u r g e o n F . G . M a r t i n c o n t i n u e d t o b e i n
charge.
( 2 )
P r o p h y l a c t i c v a c c i n e s
. — T a b l e V I I s h o w s t h a t n e a r l y o n e m i l l i o n d o s e s o f
cholera vaccine were issued. This is nearly double the amount issued last year.
The demand for other vaccines has been about the same as in the previous years.
( 3 )
I m p r o v e m e n t s i n m a n u f a c t u r e
. — T h e
i n t r o d u c t i o n o f e l e c t r i c a l l y d r i v e n
blowers and a more forcible exhaust pump combined with the experience gained
by the attendants (whom it does not pay to change) has increased the output
during the year without a proportionate increase in staff. Further economy has
been effected by replacing the ordinary glass flasks for collecting emulsions by a
more heat-resisting glass flask, "Pyrex", etc. In previous years it was not
uncommon for flasks to be broken during sterilisation.
( 4 )
T h e r a p e u t i c v a c c i n e s u b - s e c t i o n
. — T h e
d e m a n d f o r t h e s e v a c c i n e s h a s
increased to such an extent as to necessitate the formation of a sub-section which
has been put under the charge of Dr. B.Timothy. Details of the many vaccines
made are given in Table VII. Special mention must be made of filarial strept
o - c o c c u s v a c c i n e , t h e d e m a n d f o r w h i c h h a s i n c r e a s e d c o n s i d e r a b l y — 1 , 2 7 7 d o s e s
this year as against only 264 for the previous half-year. Evidently the vaccine
is much appreciated.
We should be grateful if medical institutions and practitioners would assist
us in assessing the value of our vaccines by reporting to us the results of their
use. This is a matter which I stress, as it is only in this way that we can learn
whether we are picking out the right strains. Accordingly I appeal for reports
on cases in which stock or autogenous vaccines have been issued
.
(5)
Miscellaneous supplies .—Table VIII shows the usefulness of the
Institute to hospitals and laboratories in supplying solutions for injection, media,
special reagents, cultures, etc. To save space exact details for media, sterile
materials and cultures are not given as in previous reports.
1-A