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BACTERIOLOGICAL INSTITUTE.
Report by C. Y. WANG M.D., B.Sc., D.T.M. & H., D.P.H., M.R.C.P., Acting Government Bacteriologist.
PREPARATION OF CALF LYMPH.
Twenty calves were inoculated during the year. The total number of tubes of lymph issued was 24,389, as against 18,738 in the previous year. The value of the lymph according to Government Notification No. 380 of 1910 was $8,535.50 which exceeds that of last year by $4,446. The difficulty in obtaining buffalo calves for inoculation which had arisen owing to the prohibition of exportation of these calves from Kwong Chow Wan has been overcome.
PREPARATION OF ANTI-MENINGOCOCCAL SERUM.
This is being steadily maintained. There were 64 litres of the serum in stock at the end of the year.
PREPARATION OF CONTAGIOUS ABORTION VACCINE.
The vaccine is regularly prepared and supplied on demand from the Dairy Farm Company.
PREPARATION OF TYPHOID, PARATYPHOID A, PARATYPHOID B, AND OTHER VACCINES.
As in the previous year, typhoid, paratyphoid A, paratyphoid B, and cholera vaccines have been prepared in large quantities in order that there be no delay in supplying them on demand from the medical practitioners.
PREPARATION OF RABIES VACCINE.
The steps for the preparation of this vaccine were taken in May, 1920, the original strain of virus is being obtained from Saigon by the kindness of the Director of the Pasteur Institute there. The virus is being steadily maintained by passage through the rabbit.
EXAMINATIONS IN CONNECTION WITH CLINICAL WORK.
The appended table (Table I) gives the various materials dealt with, the number of each, month by month, and the total. It will be seen that the number of examinations exceeds that of the previous year by 983. Under the heading "Miscellaneous" are included the preparation of autogenous vaccines, examinations for leprosy, Rideal-Walker test of Disinfectants and the like, which are only occasionally asked for.