When a person with infection such as a common cold or tuberculosis, coughs, sneezes or even talks, with his breath organisms are thrown into the air in very small drops of sputum.
The droplets may dry up, leaving an infectious dust on clothes, floors and furniture. When another person breathes in or inhales the infection affects the later. The diseases, which are spread by droplet infections, are diphtheria, mumps, measles, chickenpox, smallpox, whooping cough, pneumonia and upper respiratory tract infections.
Droplet infection is difficult to prevent. Prevention methods of droplet infections are:
i. Breathe fresh air and avoid crowded places.
ii. Have sufficient nutritious food.
iii. Cover the nose and mouth when coughing.
iv. Persons with tuberculosis should take proper treatment.
v. Those with measles, chicken pox, diphtheria etc should be isolated.
vi. Immunizations especially to protect children.