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CONSIDERATIONS REGARDING AN OUTBREAK OF 
MALARIA AT MORIB, FEDERATED MALAY 
STATES. 
By C. STRICKLAND, M.A., B.C., 
Travelling Medical Entomologist, Fed. Malay States. 
(From the Malaria Bureau, Kuala Lumpor.) 
Morib being a seaside resort for the jaded European community of 
the State of Selangor, much consternation was caused when a succession 
of visitors there contracted fever. An investigation which I carried 
out at Morib leads me to publish this paper upon the epidemiology of 
the outbreak. 
The endemicity of fever at Morib. 
In the first place I ascertained that two of the cases among European 
visitors were first attacks. The infection may, however, have been 
acquired elsewhere and have previously remained latent. The other 
Europeans who were affected had all a previous history of fever and 
their illness may have been due to relapse brought about by cold or 
fatigue. 
In the native population, however, the case rate pointed distinctly 
to the endemic origin of the fever. Moreover Mr Munro, late President 
of the Planters’ Association of Malaya, who lives at Morib, informed me 
that fever has always been prevalent and that only the recent large 
influx of visitors has caused attention to be drawn to it. 
The following notes will show the distribution of the cases, and the 
spleen index, among the local population in the vicinity of the Rest-house. 
1. Government Best-house. Of four Chinese servants two admitted 
that they had had fever while serving here; the head-boy who had been 
at the rest-house for four years had a greatly enlarged spleen. 
