<unk>  is a pneumonia that is not observable directly by the eye, but can only be shown indirectly, especially by radiography.<unk>  can be made visible by chest X-rays. The general symptoms cough for more than 10 days and fever for more than 3 days can indicate the presence of<unk> , just as a temperature of 39 °C or higher and a high white blood cell count. Administration of a pneumococcal vaccine decreases the incidence of<unk> , which suggests that Streptococcus pneumoniae is a cause of<unk> .<unk> , however, can also be the result of atypical pneumonia. Chest x-ray, showing pneumonia in right lower lobe. Although pneumococcal vaccination lowers the prevalence of<unk> , it does not make radiographic diagnosis superfluous at patients with prolonged fever, cough or leukocytosis. Etymology: the term is derived from the Latin<unk> us = hidden, secret and pneumonia = inflammation of the lungs > Greek: pneuma = wind and Indo-European: pleumon = floating, swimming.
Occult pneumonia
Viral pneumonia
Aspiration pneumonia
Ventilator-associated pneumonia
Fungal pneumonia
Community-acquired pneumonia
Bacterial pneumonia
Hospital-acquired pneumonia