M 143
126. Considering the small numbers of A. minimus larvae and adults which were obtained in the collections and catches, it is difficult to account for the numerous cases of malaria reported.
127. Table XIII gives the number of Anophelines caught and number dissected at the Bureau.
Kai Tak Aerodrome Officers' Mess and Men's Quarters.
128. A survey within half a mile radius of the Officers' Mess was done in January. In September work was commenced, clearing was done in the streams, ditching in the swamps, and oiling in the streams and ditches. The labour and material were supplied by the Air Ministry, the work being supervised by an Anti Malaria Inspector from the Bureau. Owing to the proximity of a large market garden area, there was a marked mosquito pest due to C. fatigans. Sumps which were ascertained to breed these mosquitoes were oiled, and other breeding places dealt with as far as possible.
Shek O.
129. The anti malaria work commenced at this seaside resort in 1935, was continued. A well for the water supply of the village has been provided, formerly the water was obtained from an A. minimus breeding stream, oiling of which was objected to by the villagers. This lack of oiling may account for a minor outbreak of malaria during the year,
130. The swampy ravines around the Shek O Club have been ditched since 1935, but unfortunately the main drainage is still obstructed by a sand bar. The building of a groyne or drainage by a culvert with tidal flap, or the diversion of the main channel through rock with a wall to keep out the sand appears to be the remedy.
131. Anti mosquito work was carried out in the locality as well as anti malaria work.
Tytam Tuk Pumping Station.
132. Owing to a minor epidemic of malaria in 1935, anti malaria work was started. Streams were cleared and oiled, the labour and material were supplied by the P.W.D. These operations were continued during the present year. No complaints were received.
Repulse Bay.
133. A beginning was made of anti malaria and anti mosquito work in November. The coolies and oil were supplied by the Chairman Urban Council. Clearing and oiling were done in the streams. Rock pools in which A. (F) togoi were breeding, were dealt with.
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