Your body has an excellent coat of armor in the skin, which keeps out germs. But cuts or other breaks in it, and openings such as the nose and mouth, provide opportunities for them to enter.
Many bacteria and viruses are spread and taken into the body through the nose and throat. Most germs thrive in moisture, and spitting, coughing, and sneezing keep them circulating. Motion pictures show that a sneeze, you may expel a spray of liquid to a distance of several feet. Such disease as the common cold, pneumonia, tuberculosis, whooping cough, scarlet fever, diphtheria, influenza, and meningitis are spread this way. These illnesses are circulated by diseased people, by people who are “coming down” with a disease, or by carriers of the germs who harbor them without being sick.
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