M 96
D. PREPARATION OF VACCINE LYMPH,
The preparation of vaccine lymph was carried on as usual during the year. Owing to difficulty in obtaining buffalo calves only 94 were vaccinated during the year.
The amount of glycerinated lymph prepared totalled 8,652 c.c. giving an average yield per calf of 92.04 c.c.
The amount issued was 12,242 c.c.
The amount remaining in stock at the end of the year was 15,085 c.c. a slight reduction from the previous year, but as this amount is in excess of a normal year's requirements it is proposed to favour a slight further reduction during the coming year.
The vaccination activities in the Colony during 1931 continued as usual and the amount of lymph issued was about the average for the past few years.
Increased accommodation for calves at the Institute was provided by converting a portion of the old stables into stalls, thus enabling a total of 19 calves to be vaccinated at one time. These stalls are in the general animal building but entirely separated from it and entered by a separate door. This extra room was considered essential owing to the irregularity of the calf supply and the fact that some batches occasionally arrive for vaccination before other vaccinated calves are scraped for lymph.
No change was made in the method of production; the vaccine produced gives satisfaction as usual and we have heard no evidence of loss of potency or ill effects from use of it. Passage through rabbits is performed as seldom as possible and the potency of the seed lymph keeps up to standard without excessive passages.
Preparation of lymph is restricted to the cooler months of the year and during the period May to September production is in abeyance. During these months the yield is apt to be poor, and bacterial growth tends to be excessive.
E. PREPARATION OF VACCINES AND SERA.
The preparation of gonococcus vaccine is the most important activity pursued under this head. Since the organization of the Venereal Disease Clinics on a proper footing the amount issued has inevitably increased tremendously, as may be seen from the following comparative figures:
1929 966 c.c.
1930 2430.17
1931 3230
M 96
D. PREPARATION OF VACCINE LYMPH,
The preparation of vaccine lymph was carried on as usual during the year. Owing to difficulty in obtaining buffalo calves only 94 were vaccinated during the year.
The amount of glycerinated lymph prepared totalled 8,652 c.c. giving an average yield per calf of 92.04 c.c.
The amount issued was 12,242 c.c.
The amount remaining in stock at the end of the year was 15,085 c.c. a slight reduction from the previous year, but as this amount is in excess of a normal year's requirements it is proposed to favour a slight further reduction during the coming year.
The vaccination activities in the Colony during 1931 con- tinued as usual and the amount of lymph issued was about the average for the past few years.
Increased accommodation for calves at the Institute was provided by converting a portion of the old stables into stalls, thus enabling a total of 19 calves to be vaccinated at one time. These stalls are in the general animal building but entirely separated from it and entered by a separate door. This extra room was considered essential owing to the rregularity of the calf supply and the fact that some batches occasionally arrive for vaccination before other vaccinated calves are scraped for lymph.
No change was made in the method cf production; the vaccine produced gives satisfaction as usual and we have heard no evidence of loss of potency or ill effects from use of it. Passage through rabbits is performed as seldom as possible and the potency of the seed lymph keeps up to standard without excessive passages.
Preparation of lymph is restricted to the cooler months of the year and during the period May to Septerober production is in abeyance. During these months the yield is apt to be poor, and bacterial growth tends to be excessive.
E. PREPARATION OF VACCINES AND SERA.
The preparation of gonococcus vaccine is the most important activity pursued under this head. Since the organization of the Venereal Disease Clinics on a proper footing the amount issued has inevitably increased tremendously, as may be seen from the following comparative figures:
1929
1930
1931
966 c.c.
2430 17
3230
No comments yet.
Private notes are available after approval.