<unk>  <unk>  is a type of lung infection that occurs in people who are on mechanical ventilation breathing machines in hospitals. As such,<unk>  typically affects critically ill persons that are in an intensive care unit (ICU) and have been on a mechanical ventilator for at least 48 hours.<unk>  is a major source of increased illness and death. Persons with<unk>  have increased lengths of ICU hospitalization and have up to a 20–30% death rate. The diagnosis of<unk>  varies among hospitals and providers but usually requires a new infiltrate on chest x-ray plus two or more other factors. These factors include temperatures of >38 °C or 12 × 109/ml, purulent secretions from the airways in the lung, and/or reduction in gas exchange. A different less studied infection found in mechanically ventilated people is ventilator-associated tracheobronchitis (VAT). As with<unk> , tracheobronchial infection can colonise the trachea and travel to the bronchi. VAT may be a risk factor for<unk> .
Ventilator-associated pneumonia
Hospital-acquired pneumonia
Community-acquired pneumonia
Occult pneumonia
Idiopathic pneumonia syndrome
Ventilator-associated lung injury
Aspiration pneumonia
Hantavirus pulmonary syndrome