MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Pneumonia. Coloured chest X-ray of a seven year old girl with pneumonia. The infection is seen as the area of inflammation (red) in the lung at right (blue). The bones of the spine, ribcage and shoulders are pink, white and yellow. Pneumonia is usually due to a bacterial or viral infection. Symptoms include fever, difficulty in breathing and a cough that produces yellow/green sputum. Pneumonia is most common in infants, the elderly and people with weakened immune systems, especially as a complication of another serious illness. Treatment depends on the infection involved, for example antibiotic drugs for bacterial infection.
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