2
infants, in Jessore the death of four vaccinators and illness of eight and the
inability of the local authorities to get substitutes in their places and in Dacca
the want of energy amongst vaccinators owing to their inability to realise
their fees on account of the partial introduction of free vaccination are said
to be the additional factors for the decrease.
5. Vaccination in municipalities.—In Calcutta, 31,186 operations were
performed during the year against 239,157 during 1919-20, while in mufassal
municipalities, dispensaries, etc., the number amounted to 140,338 against
324,112. The average number of vaccinations performed by each vaccinator
in mufassal municipalities was 680 against 1,478 during 1919-20, while that
done by a licensed and paid vaccinator amounted to 1,084 and 1,452 against
1,393 and 1,696, respectively, during the previous year.
6. Protection afforded to infants.—During the year under review, out
of 1,037,089, the estimated number of infants available for vaccination, 301,168,
or 290.4 per mille, were successfully vaccinated in rural areas as compared
with 315.98 during the previous year. Only in five districts against four
during the previous year, the protection afforded to infants was over 500 per
mille. The districts in the Dacca and Chittagong Divisions as usual were
the worst in this respect. The protection afforded to infants in municipalities
is shown in Appendix VII. It will be seen that 588.62 of the surviving
infant population was protected during the year against 836.47 during the
previous year.
7. Recess vaccination.—Altogether 618,351 vaccinations were per-
formed during the recess or non-working season of 1920-21 in connection
with suppression of small-pox epidemics against 556,400 during the previous
year.
8. Six-puncture vaccination.—The total number of successful primary
and re-vaccination operations performed in six points during 1920-21 was
205,082 and 45,875, respectively, against 214,069 and 19,051 during the
preceding year. The largest number of re-vaccination in six points were
performed in the Faridpur district during the year, and, of these, 27,506 proved
successful against 4,455 during the previous year.
9. Factory and tea garden vaccination.—Six thousand four hundred
and eighty-five primary and 4,976 re-vaccinations were performed in factories
and tea gardens in this Presidency during 1920-21 against 7,775 and 20,264
during the previous year.
10. Cost and contribution towards vaccination.—The total cost of
vaccination during the year was Rs. 3,13,253-8-3 against Rs. 2,80,118-4-4 during
1919-20, the average cost of each successful case of vaccination being two
annas and six pies against one anna and eight pies. The District Boards
and Cantonments contributed Rs. 72,290-13 and Rs. 199-7-9 against
Rs. 56,315-13-11 and Rs. 148-10-0 during the previous year.
11. Diagram illustrating death-rates from small-pox during 1920-21
and the degree of protection afforded to infants during the last seven
years from 1914-15 to 1920-21.—The diagram facing this page illustrates
the death-rates from small-pox in each district during 1920-21, the proportion
of population reported to have been protected against the disease by vaccina-
tion during the past seven years being shown side by side.
12. Deaths from small-pox.—The total number of deaths from small-pox
recorded during the year 1920-21 was 21,950 against 41,200 during 1,919-20,
the rates per mille of population being .48 against .90. The largest number
of deaths were recorded in the districts of Dacca (2,434), Mymensingh
(2,265), Dinajpur (1,517), Bogra (1,362), Murshidabad (1,204), 24-Parganas
(1,139), Tippera (1,143), Rajshahi (1,101), Midnapur (1,054), Rangpur
(1,040), Faridpur (1,000), Jessore (630), Hooghly (619), Howrah (617), Nadia
(614), Jalpaiguri (592), Malda (544), Burdwan (530) and Calcutta (497), while
the districts of Darjeeling, Khulna and Chittagong had only 19,109 and 158
deaths, respectively.
13. Bengal Vaccine Depôt.—The total number of calves vaccinated
during the year was 2,278 against 2,742 during the preceding year and the
quantity of lymph manufactured was 1,506,164 grains against 1,715,101
grains during 1919-20. Certain experiments were made during the year by
the Superintendent of the Bengal Vaccine Depôt regarding the efficacy of