HEALTH PRECAUTIONS 371 
munities where there is a large percentage of 
Indian population, but this need not be a cause 
for worry if one is vaccinated. A popular 
South American hotel, having had many cases 
of this disease among its patrons, has hanging 
in each room this sign:— 
“Rooms disinfected when guests leave,” 
in order to inspire confidence in its new clients. 
This sign might have as a companion, another 
one displayed in a leading Latin American 
hotel, reading:— 
“Guests are requested not to spit 
through the mosquito netting.” 
Yellow fever always exists in many of the 
towns of Ecuador, Colombia, Venezuela, 
Brazil and most of the Mexican and Central 
American ports. It is due to the bite of a 
certain species of mosquito. By observing 
precautions, such as sleeping under a net and 
staying away from districts known to breed 
these insects, the chances for contracting this 
disease are materially minimized. 
That bubonic plague is present in many lo