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BACTERIOLOGICAL INSTITUTE.
REPORT FOR THE YEAR 1924.
By E. P. MINETT, M.D., D.P.H., D.T.M. & H., L.R.C.P., M.R.C.S. GOVERNMENT BACTERIOLOGIST.
1.-PREPARATION OF CALF LYMPH.
The preparation of fresh calf lymph has been maintained during the cooler months of the year.
The number of calves used for vaccination was 81. The number of tubes of lymph issued during the year was 19,922.
The quantity of lymph in stock on December 31st was 5,206 c.c. calculated to be sufficient for the vaccination of 156,180 persons.
The value of lymph issued as per Government Notification No. 380 of 1910, was $6,489.50
The above figures show a considerable falling off compared with the figures for 1923 owing to the absence of any epidemic of small-pox.
The average yield of crude lymph per calf was 20 grams; after preparation this represents 100 grams of glycerinated lymph per calf.
2.-PREPARATION OF ANTI-MENINGOCOCCUS SERUM.
During the year 2,840 c.c. were issued; the present amount of serum in stock and ready for issue is 110 litres.
Frequent control tests were carried out to test the sterility and agglutinating power of the serum.
3.-PREPARATION OF CONTAGIOUS ABORTION VACCINE.
Three new strains imported from the United Kingdom and two new strains isolated locally were added to the vaccine at present being supplied regularly to the Dairy Farm.
The amount of vaccine issued was approximately the same as last year.
4.-MILK ANALYSES.
The number of samples of milk examined for the presence of B. Tuberculosis was 29, all being negative.