What dangerous 
microbes can 
get into mil\? 
40 WORLD OF INVISIBLE LIFE 
as possible after it is taken from the cow and 
to keep it as cold as possible until it is used. 
Most of the microbes in milk only make 
it taste unpleasant, but sometimes harmful 
microbes get into fresh milk and bring disease 
to the people who drink it. These dangerous 
microbes can get into the milk from the cow 
herself, or, more often, they may come from 
certain persons handling the milk. The mi¬ 
crobes of typhoid fever, diphtheria, scarlet 
fever, and sore throat, sometimes get into milk 
from people suffering from mild attacks or 
just getting over these diseases. Typhoid fever 
germs can sometimes get into milk from water 
containing them which has been used for 
rinsing out the milk-buckets, or they can be 
brought to it by flies which have picked up 
germs from the ground. Tuberculosis and 
foot-and-mouth disease can come from a sick 
cow to human beings by germs in the sick 
cow’s milk. 
Milk is so likely to contain harmful microbes, 
and is such a fine place for their growth, that 
