PNEUMONIA - an infectious disease.

Pneumonia is an infection of the lungs. Different types of germs including viruses, bacteria and fungi can cause it.A person of any age from infant to old can suffer from pneumonia. Small children can succumb to the disease within a matter of days and case fatality rates are higher in young infants and malnourished children. Under 3 years of age children are affected more often and more severely.The viruses that have been found in association acute respiratory disease are numerous. The severity of the illness is often determined by whether or not secondary bacterial infection occurs. A common cold or flu can irritate the lungs, creating a situation where it is easier for the germs to move and cause the pneumonia. It can be an extension of the infection of nose, ear or throat.
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