M 35
One thing is certain and that is the nullahs with their inverts strewn with granite rocks and boulders and with tiny pools, seepages and small streams are typical breeding grounds for the dangerous malaria carriers A. maculatus and A. minimus. The draining of these nullahs so as to obviate all danger of breeding is a matter which is at the same time difficult and expensive. Every year the Public Works Department insert sum in the estimates for "the training of Nullahs" and every year work up to the limit of the sum sanctioned is carried out. There can be no doubt that the disappearance of malaria from the populated area is in a large measure the result of the drainage works carried out by this Department.
The Malariological Branch of the Medical Department.
The Malarialogist Dr. Jackson and his assistant Mr. Deb arrived in the Colony on April 24th on transfer from the Federated Malay States and established the beginnings of Malaria Bureau in a portion of the Bacteriological Institute placed at their disposal by the Government Bacteriologist. In May a clerk and in November four Chinese probationers were added to the staff.
Since the establishment of the Bureau, investigations have been made and reports issued regarding the malaria situation at Lyemun Barracks, Sun Wai Military Camp, Taikoo Dockyard, Repulse Bay, Tung Wah Eastern Hospital at Sookumpoo and St. Stephens College at Stanley.
Requests for assistance having been received from the Military Authorities, the Police, Kowloon Hospital Authorities and others with respect to mosquito nuisances local larval surveys were done and recommendations made.
Spleen Rates.-In many countries the spleen rate of the local children is regarded as a reliable index of the amount of Malaria there existing—but in Hong Kong the results obtained by Dr. Jackson and his staff have been in some cases decidedly puzzling. In certain areas of bad repute such as Taikoo and Lyemun spleen indices were found to be very low despite the fact that mosquito nets are not generally used and the habitations are within easy flying distance of numerous breeding places of Anopheles maculatus mosquitoes, which are potent carriers in Malaya and of A. minimus.
At Stanley peninsula, where in the early days of the Colony Malaria was rife among the troops, there were no enlarged spleens among the 65 children examined.
With regard to the New Territories, where the Malaria situation has so far received little scientific investigation, the few spleen census taken by the Bureau show rates considerably higher than have been found on the Island of Hong Kong. At Taipo Market out of 46 examined 5 or 10.8% had enlarged spleens In the villages near Sun Wai Military Camp of 33...
M 35
One thing is certain and that is the nullahs with their inverts strewn with granite rocks and boulders and with tiny pools, seepages and small streams are typical breeding grounds for the dangerous malaria carriers A. maculatus and A. minimus. The draining of these nullahs so as to obviate all danger of breeding is a matter which is at the same time difficult and expensive. Every year the Public Works Department insert sum in the estimates for "the training of Nullahs" and every year work up to the limit of the sum sanctioned is carried out. There can be no doubt that the disappearance of malaria from the populated area is in a large measure the result of the drainage works carried out by this Department.
The Malariological Branch of the Medical Department.
The Malarialogist Dr. Jackson and his assistant Mr. Deb arrived in the Colony on April 24th. on transfer from the Federated Malay States and established the beginnings of Malaria Bureau in a portion of the Bacteriological Institute placed at their disposed by the Government Bacteriologist. In May a clerk and in November four Chinese probationers were added to the staff.
Since the establishment of the Bureau, investigations have been made and reports issued regarding the malaria situation at Lyemun Barracks, Sun Wai Military Camp, Taikoo Dockyard, Repulse Bay, Tung Wah Eastern Hospital at Sookumpoo and St. Stephens College at Stanley.
Requests for assistance having been received from the Military Authorities, the Police, Kowloon Hospital Authorities and others with respect to mosquito nuisances local larval surveys were done and recommendations made.
Spleen Rates.-In many countries the spleen rate of the local children is regarded as a reliable index of the amount of Malaria there existing-but in Hong Kong the results obtained by Dr. Jackson and his staff have been in some cases decidedly puzzling. In certain areas of bad repute such as Taikoo and Lyemun spleen indices were found to be very low despite the fact that mosquito nets are not generally used and the habitations are within easy flying distance of numerous breeding places of Anopheles maculatus mosquitoes, which are potent carriers in Malaya and of A. minimus.
At Stanley peninsula, where in the early days of the Colony Malaria was rife among the troops, there were no enlarged spleens among the 65 children examined.
With regard to the New Territories, where the Malaria situation has so far received little scientific investigation, the few spleen census taken by the Bureau show rates considerably higher than have been found on the Island of Hong Kong. At Taipo Market out of 46 examined 5 or 10.8% had enlarged spleens In the villages near Sun Wai Military Camp of 33
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