What disease is caused by Legionella pneumophila?

Legionella pneumophila is a bacterium that is known to cause pneumonia, specifically a severe form known as Legionnaires' disease. This type of pneumonia is characterized by inflammation of the lungs and can lead to symptoms such as cough, shortness of breath, fever, and chills. The bacterium typically spreads through aerosolized water droplets found in environments such as air conditioning systems, hot tubs, and large plumbing systems.

The choice of pneumonia as the correct answer highlights the specific infectious disease associated with this pathogen, emphasizing the importance of recognizing the bacteria's role in respiratory illness. This understanding is crucial for effective diagnosis and treatment, as infections caused by Legionella can often lead to severe complications, particularly in immunocompromised individuals or those with underlying health conditions.