BY DR. A. JEFFERIS TURNER, M.D. LOND., D.P.H. CAMB. 113 
Clothing Building”’ was purposely so built as to exclude 
efficient ventilation. Both were provided with wire screen 
windows, and double wire screen doors, so that mosquitos 
could be kept within or without the buildings, as the 
experimenters might desire. 
The results of the experiments may be very briefly 
summarised. Non-immune subjects exposed to the bites 
of mosquitos that had previously bitten yellow fever 
patients were readily infected, provided the interval between 
the bites were at least twelve days. Before that interval] 
the mosquitos were harmless, but they maintained their 
virulence for as long as eight weeks. Control subjects 
separated from the mosquitos in the same room by a wire 
partition remained uninfected. Meanwhile, in the 
*“Tnfected Clothing Building,” non-immune subjects lived 
and slept among clothing soiled by the discharges of yellow 
fever patients, and even wore the very shirts in which these 
patients had been clothed, for so long as twenty days without 
a single instance of infection. This experiment disproved 
the virulence of ‘‘fomites”’ in yellow fever. The problem 
of the method of transmission of yellow fever had been 
solved in the most conclusive way. 
The practical importance of this discovery is immense. 
Yellow fever epidemics can now be stamped out. The 
method is simple. As soon as a case of the disease is 
notified, the patient is promptly isolated by wire screens, 
so as to prevent the possibility of mosquitos becoming 
infected from him. At the same time, the whole house is 
fumigated so as to destroy any mosquitos that may have 
already become infected. In addition, a ‘“* mosquito 
brigade’ is organised to destroy the larvae of Stegomyia 
fasciata in their breeding places throughout the town. 
This mosquito is, | may observe, very abundant in Brisbane. 
We breed it in our water tanks, and if ever a case of yellow 
fever is imported here, which in these days of rapid travelling 
is not impossible, every condition is present to favour the 
occurrence of a considerable epidemic. We may then 
realise more fully the value of Dr. Reed’s experimental 
work. 
All the evidence at our disposal fails to indicate that 
yellow fever is spread naturally in any other way than 
H—Reoyat Soe. 
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