Medicine - Institutions > Army health reports and medical documents > Scientific memoirs by officers of the Medical and Sanitary Departments of the Government of India > Number 19 - On kala azar, malaria and malarial cachexia > On kala azar, malaria and malarial cachexia
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fever. In a previous memoir* I have shown that in very malarious places the
native of India acquires an immunity to malarial fever: for example, among
the syces and their families who had lived all their lives in Mian Mir the immunity
of the adults was very marked: while 63 per cent. of children between 0 and 10
years of age had enlarged spleens due to malaria, among people between 11 and
25 years of age the percentage with enlarged spleens was only 23, and among
people between 26 and 40 years of age it was only 8. The percentage of
people with malarial parasites in their blood diminished at advancing age-
periods in a similar manner. Now, the people of all ages were equally exposed
to malarial infection, and it is beyond dispute that the absence of enlarged spleens.
and of parasites among the adults was due to their having acquired, by repeated
attacks in early life, an immunity to malarial infection.
This rule, that natives who have resided during a number of years in a
malarious place acquire an immunity to malarial fever, has been found to hold
good in several places in India besides Mian Mir, and the following tables will
show that it holds good also in malarious places in Assam :—
| Place. | Age-period of people examined. |
Number of people examined. |
Percentage of people with enlarged spleens |
| Old Salonah (Nowgong district) . | Between 0 and 5 years. | 34 | 85 |
| " 5 and 10 " | 40 | 65 | |
| " 10 and 15 " | 35 | 57 | |
| " 15 and 20 " | 76 | 39 | |
| 20 years and over | 164 | 15 |
| Place. | Age of people examined. | Number examined. | Percentage of people with mala rial parasites or pigment in their blood. |
| Old Salonah | Under 5 years | 25 | 80 |
| Over 25 years | 25 | 0 |
*" Malaria in India": Scientific Memoirs. New Series, No. 2.
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| Description | 61 volume new series covers bacteriological research work from 1902-1913 by Indian Medical Service staff. Laboratory experiments are recorded in detail. Many are accompanied by illustrations showing microscopic views and features of plant and animal matter. (Calcutta : Supt. of Govt. Print., India, 1885-1901.) |
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| Description | 12 titles describe the health and sanitary conditions of the army in India. Lists British, European and Indian troops plus families of military personnel. 3 volumes of army regulations included. 73 volumes make up the Scientific Memoirs series, a journal by Indian Medical Service staff. |
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| Description | The India Papers collection contains publications of the central (Imperial) Government and many Indian states. Most states came under British rule. Much of the collection dates from between the post-Mutiny re-organisation of the Indian Government and Indian Independence in 1947. Some items published in London by John Murray. |
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