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thin films owing to the scantiness of the infections. The films were obtained through the co-operation of the M.O. Gaol and his staff and were stained and examined in the Laboratory of the Bureau.
43. Records obtained from the R.A.M.C. authorities regarding incidence of malarial infection amongst the troops, British and Indian, are as follows (relapses not being taken into account):
British troops:- number of cases of malaria contracted during the year was 57, of which 11 occurred in the first quarter, 4 in the second quarter, 17 in the third quarter, 25 in the fourth quarter. In the first quarter, 6 of the cases were amongst troops who had been in Camp, in the fourth quarter, 16. Calculated on an average strength of 3540, the yearly admission rate for fresh cases was 16.10 per thousand.
44. Amongst the Indian troops there were 29 fresh cases, of which there were none in the first quarter, 7 in the second, 11 in the third, 11 in the fourth quarter. These admissions work out for the year as 19.6 per thousand on an average strength of 1480.
Dengue.
45. According to returns received 3 cases were admitted to Government hospitals during 1934. No specimens of Aedes aegypti were met with, but Aedes albopictus was frequently encountered.
Filaria.
46. Four cases of disease due to filarial infection were reported from Government Hospitals during the year. Mosquitoes obtained from Wo Li Hop, Shing Mun, Little Hong Kong were dissected and examined for larval filaria. The results are shown in Table XIX. Two instances of double infection (malaria and filaria) were encountered, one was an A. maculatus from Shing Mun, the other an A. minimus from Little Hong Kong.
47. A larval filaria was found entangled in the tracheae on the midgut of an A. hyrcanus; on staining with dilute Giemsa no differences could be made out, (apart from the absence of a sheath) between it and W. bancrofti obtained from thick blood films.
48. Table XIX gives findings obtained from examinations for microfilaria of thick films made from prisoners admitted to Victoria Gaol. These films were taken in the daytime for examination for malaria parasites.
49. Specimens of Microfilaria malaya were received from Dr. Y.T. Yao, Department of Parasitology, Nanking, and from Dr. Stephen Hu, Lester Institute, Shanghai.
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thin films owing to the scantiness of the infections. The films were obtained through the co-operation of the M.O. Gaol and his staff and were stained and examined in the Laboratory of the Bureau.
43. Records obtained from the R.A.M.C. authorities regard- ing incidence of malarial infection amongst the troops, British and Indian, are as follows (relapses not being taken into ac- count) :
British troops :-number of cases of malaria contracted dur- ing the year was 57, of which 11 occurred in the first quarter, 4 in the second quarter, 17 in the third quarter, 25 in the fourth quarter. In the first quarter, 6 of the cases were amongst troops who had been in Camp, in the fourth quarter, 16. Calculated on an average strength of 3540, the yearly admission rate for fresh cases was 16.10 per thousand.
44. Amongst the Indian troops there were 29 fresh cases, of which there were none in the first quarter, 7 in the second, 11 in the third, 11 in the fourth quarter. These admissions work out for the year as 19.6 per thousand on an average strength of 1480.
Dengue.
45. According to returns received 3 cases were admitted to Government hospitals during 1934. No specimens of Aedes aegypti were met with, but Aedes albopictus was frequently en- countered.
Filaria.
46. Four cases of disease due to filarial infection were report- ed from Government Hospitals during the year. Mosquitoes ob- tained from Wo Li Hop, Shing Mun, Little Hong Kong were dissected and examined for larval filaria. The results are shown in Table XIX. Two instances of double infection (malaria and filaria) were encountered, one was an A. maculatus from Shing Mun, the other an A. minimus from Little Hong Kong.
47. A larval filaria was found entangled in the trachae on the midgut of an A. hyrcanus; on staining with dilute Giemsa no differences could be made out, (apart from the absence of a sheath) between it and W. bancrofti obtained from thick blood films.
48. Table IX gives findings obtained from examinations for microfilaria of thick films made from prisoners admitted to Victoria Gaol. These films were taken in the daytime for ex- umination for malaria parasites.
49. Specimens of Microfilaria malaya were received from Dr. YT. Yao, Department of Parasitology, Nanking, and from Dr. Stephen Hu, Lester Institute, Shanghai.
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