FOOD m THE TROPICS 
131 
soil. Even though appearances suggest that the place has not 
been occupied for some time, you should be on your guard and 
prepare your food as carefully as though people were actually 
living there. Thorough cooking kills all disease germs; hence 
to be safe you should cook all vegetables. This is good pro- 
tection against dysentery, cholera, and diarrhea. If flies are 
present the food should be protected from them, as they can 
reinfect it after it is cooked. 
